diff --git a/MediaBrowser.Api/Music/InstantMixService.cs b/MediaBrowser.Api/Music/InstantMixService.cs
index 506b7bc3a0..905ead86c6 100644
--- a/MediaBrowser.Api/Music/InstantMixService.cs
+++ b/MediaBrowser.Api/Music/InstantMixService.cs
@@ -138,8 +138,9 @@ namespace MediaBrowser.Api.Music
         public object Get(GetInstantMixFromArtist request)
         {
             var user = _userManager.GetUserById(request.UserId);
+            var artist = _libraryManager.GetArtist(request.Name);
 
-            var items = _musicManager.GetInstantMixFromArtist(request.Name, user);
+            var items = _musicManager.GetInstantMixFromArtist(artist, user);
 
             return GetResult(items, user, request);
         }
diff --git a/MediaBrowser.Controller/Library/ILibraryManager.cs b/MediaBrowser.Controller/Library/ILibraryManager.cs
index 6906a25fb4..9331ca7598 100644
--- a/MediaBrowser.Controller/Library/ILibraryManager.cs
+++ b/MediaBrowser.Controller/Library/ILibraryManager.cs
@@ -502,5 +502,12 @@ namespace MediaBrowser.Controller.Library
         /// <param name="query">The query.</param>
         /// <returns>List&lt;System.String&gt;.</returns>
         List<string> GetPeopleNames(InternalPeopleQuery query);
+
+        /// <summary>
+        /// Queries the items.
+        /// </summary>
+        /// <param name="query">The query.</param>
+        /// <returns>QueryResult&lt;BaseItem&gt;.</returns>
+        QueryResult<BaseItem> QueryItems(InternalItemsQuery query);
     }
 }
\ No newline at end of file
diff --git a/MediaBrowser.Controller/Library/IMusicManager.cs b/MediaBrowser.Controller/Library/IMusicManager.cs
index 0ce0687cc1..9baf8b6f12 100644
--- a/MediaBrowser.Controller/Library/IMusicManager.cs
+++ b/MediaBrowser.Controller/Library/IMusicManager.cs
@@ -16,10 +16,10 @@ namespace MediaBrowser.Controller.Library
         /// <summary>
         /// Gets the instant mix from artist.
         /// </summary>
-        /// <param name="name">The name.</param>
+        /// <param name="artist">The artist.</param>
         /// <param name="user">The user.</param>
         /// <returns>IEnumerable{Audio}.</returns>
-        IEnumerable<Audio> GetInstantMixFromArtist(string name, User user);
+        IEnumerable<Audio> GetInstantMixFromArtist(MusicArtist artist, User user);
         /// <summary>
         /// Gets the instant mix from genre.
         /// </summary>
diff --git a/MediaBrowser.Server.Implementations/Library/LibraryManager.cs b/MediaBrowser.Server.Implementations/Library/LibraryManager.cs
index 0cfd38479a..a67e3d7329 100644
--- a/MediaBrowser.Server.Implementations/Library/LibraryManager.cs
+++ b/MediaBrowser.Server.Implementations/Library/LibraryManager.cs
@@ -3,12 +3,14 @@ using MediaBrowser.Common.Extensions;
 using MediaBrowser.Common.IO;
 using MediaBrowser.Common.Progress;
 using MediaBrowser.Common.ScheduledTasks;
+using MediaBrowser.Controller.Channels;
 using MediaBrowser.Controller.Configuration;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Entities.Audio;
 using MediaBrowser.Controller.Entities.TV;
 using MediaBrowser.Controller.IO;
 using MediaBrowser.Controller.Library;
+using MediaBrowser.Controller.LiveTv;
 using MediaBrowser.Controller.Persistence;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Controller.Resolvers;
@@ -243,10 +245,6 @@ namespace MediaBrowser.Server.Implementations.Library
             }
         }
 
-        /// <summary>
-        /// The _items by name path
-        /// </summary>
-        private string _itemsByNamePath;
         /// <summary>
         /// The _season zero display name
         /// </summary>
@@ -260,7 +258,6 @@ namespace MediaBrowser.Server.Implementations.Library
         private void RecordConfigurationValues(ServerConfiguration configuration)
         {
             _seasonZeroDisplayName = configuration.SeasonZeroDisplayName;
-            _itemsByNamePath = ConfigurationManager.ApplicationPaths.ItemsByNamePath;
             _wizardCompleted = configuration.IsStartupWizardCompleted;
         }
 
@@ -273,56 +270,24 @@ namespace MediaBrowser.Server.Implementations.Library
         {
             var config = ConfigurationManager.Configuration;
 
-            var ibnPathChanged = !string.Equals(_itemsByNamePath, ConfigurationManager.ApplicationPaths.ItemsByNamePath, StringComparison.Ordinal);
-
-            if (ibnPathChanged)
-            {
-                RemoveItemsByNameFromCache();
-            }
-
             var newSeasonZeroName = ConfigurationManager.Configuration.SeasonZeroDisplayName;
             var seasonZeroNameChanged = !string.Equals(_seasonZeroDisplayName, newSeasonZeroName, StringComparison.Ordinal);
             var wizardChanged = config.IsStartupWizardCompleted != _wizardCompleted;
 
             RecordConfigurationValues(config);
 
-            Task.Run(async () =>
+            if (seasonZeroNameChanged || wizardChanged)
             {
-                if (seasonZeroNameChanged)
-                {
-                    await UpdateSeasonZeroNames(newSeasonZeroName, CancellationToken.None).ConfigureAwait(false);
-                }
-
-                if (seasonZeroNameChanged || ibnPathChanged || wizardChanged)
-                {
-                    _taskManager.CancelIfRunningAndQueue<RefreshMediaLibraryTask>();
-                }
-            });
-        }
+                _taskManager.CancelIfRunningAndQueue<RefreshMediaLibraryTask>();
+            }
 
-        private void RemoveItemsByNameFromCache()
-        {
-            RemoveItemsFromCache(i => i is Person);
-            RemoveItemsFromCache(i => i is Year);
-            RemoveItemsFromCache(i => i is Genre);
-            RemoveItemsFromCache(i => i is MusicGenre);
-            RemoveItemsFromCache(i => i is GameGenre);
-            RemoveItemsFromCache(i => i is Studio);
-            RemoveItemsFromCache(i =>
+            if (seasonZeroNameChanged)
             {
-                var artist = i as MusicArtist;
-                return artist != null && artist.IsAccessedByName;
-            });
-        }
-
-        private void RemoveItemsFromCache(Func<BaseItem, bool> remove)
-        {
-            var items = _libraryItemsCache.ToList().Where(i => remove(i.Value)).ToList();
+                Task.Run(async () =>
+                {
+                    await UpdateSeasonZeroNames(newSeasonZeroName, CancellationToken.None).ConfigureAwait(false);
 
-            foreach (var item in items)
-            {
-                BaseItem value;
-                _libraryItemsCache.TryRemove(item.Key, out value);
+                });
             }
         }
 
@@ -374,6 +339,21 @@ namespace MediaBrowser.Server.Implementations.Library
 
         private void RegisterItem(Guid id, BaseItem item)
         {
+            if (item is LiveTvProgram)
+            {
+                return;
+            }
+            if (item is IChannelItem)
+            {
+                return;
+            }
+            if (item is IItemByName)
+            {
+                if (!(item is MusicArtist))
+                {
+                    return;
+                }
+            }
             LibraryItemsCache.AddOrUpdate(id, item, delegate { return item; });
         }
 
@@ -951,11 +931,14 @@ namespace MediaBrowser.Server.Implementations.Library
                     DateModified = DateTime.UtcNow,
                     Path = path
                 };
-            }
 
-            if (isArtist)
-            {
-                (item as MusicArtist).IsAccessedByName = true;
+                if (isArtist)
+                {
+                    (item as MusicArtist).IsAccessedByName = true;
+                }
+
+                var task = item.UpdateToRepository(ItemUpdateType.None, CancellationToken.None);
+                Task.WaitAll(task);
             }
 
             return item;
@@ -1259,6 +1242,11 @@ namespace MediaBrowser.Server.Implementations.Library
             };
         }
 
+        public QueryResult<BaseItem> QueryItems(InternalItemsQuery query)
+        {
+            return ItemRepository.GetItems(query);
+        }
+
         public List<Guid> GetItemIds(InternalItemsQuery query)
         {
             return ItemRepository.GetItemIdsList(query);
diff --git a/MediaBrowser.Server.Implementations/Library/MusicManager.cs b/MediaBrowser.Server.Implementations/Library/MusicManager.cs
index 1a9e982688..b832563429 100644
--- a/MediaBrowser.Server.Implementations/Library/MusicManager.cs
+++ b/MediaBrowser.Server.Implementations/Library/MusicManager.cs
@@ -27,10 +27,8 @@ namespace MediaBrowser.Server.Implementations.Library
             return list.Concat(GetInstantMixFromGenres(item.Genres, user));
         }
 
-        public IEnumerable<Audio> GetInstantMixFromArtist(string name, User user)
+        public IEnumerable<Audio> GetInstantMixFromArtist(MusicArtist artist, User user)
         {
-            var artist = _libraryManager.GetArtist(name);
-
             var genres = user.RootFolder
                 .GetRecursiveChildren(user, i => i is Audio)
                 .Cast<Audio>()
@@ -107,7 +105,7 @@ namespace MediaBrowser.Server.Implementations.Library
             var artist = item as MusicArtist;
             if (artist != null)
             {
-                return GetInstantMixFromArtist(artist.Name, user);
+                return GetInstantMixFromArtist(artist, user);
             }
 
             var song = item as Audio;
diff --git a/MediaBrowser.Server.Implementations/LiveTv/LiveTvManager.cs b/MediaBrowser.Server.Implementations/LiveTv/LiveTvManager.cs
index 26007f1451..cabe04f0fb 100644
--- a/MediaBrowser.Server.Implementations/LiveTv/LiveTvManager.cs
+++ b/MediaBrowser.Server.Implementations/LiveTv/LiveTvManager.cs
@@ -1,5 +1,4 @@
-using System.IO;
-using MediaBrowser.Common;
+using MediaBrowser.Common;
 using MediaBrowser.Common.Configuration;
 using MediaBrowser.Common.Extensions;
 using MediaBrowser.Common.IO;
@@ -26,6 +25,7 @@ using MoreLinq;
 using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
@@ -59,8 +59,6 @@ namespace MediaBrowser.Server.Implementations.LiveTv
 
         private readonly SemaphoreSlim _refreshRecordingsLock = new SemaphoreSlim(1, 1);
 
-        private readonly ConcurrentDictionary<Guid, Guid> _refreshedPrograms = new ConcurrentDictionary<Guid, Guid>();
-
         private readonly List<ITunerHost> _tunerHosts = new List<ITunerHost>();
         private readonly List<IListingsProvider> _listingProviders = new List<IListingsProvider>();
         private readonly IFileSystem _fileSystem;
@@ -253,7 +251,7 @@ namespace MediaBrowser.Server.Implementations.LiveTv
 
             var now = DateTime.UtcNow;
 
-            var programs = _libraryManager.GetItems(new InternalItemsQuery
+            var programs = _libraryManager.QueryItems(new InternalItemsQuery
             {
                 IncludeItemTypes = new[] { typeof(LiveTvProgram).Name },
                 MaxStartDate = now,
@@ -799,7 +797,7 @@ namespace MediaBrowser.Server.Implementations.LiveTv
                 }
             }
 
-            IEnumerable<LiveTvProgram> programs = _libraryManager.GetItems(internalQuery).Items.Cast<LiveTvProgram>();
+            IEnumerable<LiveTvProgram> programs = _libraryManager.QueryItems(internalQuery).Items.Cast<LiveTvProgram>();
 
             programs = _libraryManager.Sort(programs, user, query.SortBy, query.SortOrder ?? SortOrder.Ascending)
                 .Cast<LiveTvProgram>();
@@ -869,7 +867,7 @@ namespace MediaBrowser.Server.Implementations.LiveTv
                 }
             }
 
-            IEnumerable<LiveTvProgram> programs = _libraryManager.GetItems(internalQuery).Items.Cast<LiveTvProgram>();
+            IEnumerable<LiveTvProgram> programs = _libraryManager.QueryItems(internalQuery).Items.Cast<LiveTvProgram>();
 
             var programList = programs.ToList();
 
@@ -1081,8 +1079,6 @@ namespace MediaBrowser.Server.Implementations.LiveTv
             await CleanDatabaseInternal(newChannelIdList, new[] { typeof(LiveTvChannel).Name }, progress, cancellationToken).ConfigureAwait(false);
             await CleanDatabaseInternal(newProgramIdList, new[] { typeof(LiveTvProgram).Name }, progress, cancellationToken).ConfigureAwait(false);
 
-            _refreshedPrograms.Clear();
-
             // Load these now which will prefetch metadata
             var dtoOptions = new DtoOptions();
             dtoOptions.Fields.Remove(ItemFields.SyncInfo);
diff --git a/MediaBrowser.Server.Implementations/LiveTv/TunerHosts/BaseTunerHost.cs b/MediaBrowser.Server.Implementations/LiveTv/TunerHosts/BaseTunerHost.cs
index fb6fa9084b..649cecc85c 100644
--- a/MediaBrowser.Server.Implementations/LiveTv/TunerHosts/BaseTunerHost.cs
+++ b/MediaBrowser.Server.Implementations/LiveTv/TunerHosts/BaseTunerHost.cs
@@ -176,7 +176,7 @@ namespace MediaBrowser.Server.Implementations.LiveTv.TunerHosts
 
                     if (stream != null)
                     {
-                        return null;
+                        return stream;
                     }
                 }
             }
@@ -184,7 +184,20 @@ namespace MediaBrowser.Server.Implementations.LiveTv.TunerHosts
             throw new LiveTvConflictException();
         }
 
-        protected abstract Task<bool> IsAvailable(TunerHostInfo tuner, string channelId, CancellationToken cancellationToken);
+        protected async Task<bool> IsAvailable(TunerHostInfo tuner, string channelId, CancellationToken cancellationToken)
+        {
+            try
+            {
+                return await IsAvailableInternal(tuner, channelId, cancellationToken).ConfigureAwait(false);
+            }
+            catch (Exception ex)
+            {
+                Logger.ErrorException("Error checking tuner availability", ex);
+                return false;
+            }
+        }
+
+        protected abstract Task<bool> IsAvailableInternal(TunerHostInfo tuner, string channelId, CancellationToken cancellationToken);
 
         protected abstract bool IsValidChannelId(string channelId);
 
diff --git a/MediaBrowser.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunHost.cs b/MediaBrowser.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunHost.cs
index 307a61588b..5890e24eb8 100644
--- a/MediaBrowser.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunHost.cs
+++ b/MediaBrowser.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunHost.cs
@@ -128,7 +128,7 @@ namespace MediaBrowser.Server.Implementations.LiveTv.TunerHosts.HdHomerun
                             var name = line.Substring(0, index - 1);
                             var currentChannel = line.Substring(index + 7);
                             if (currentChannel != "none") { status = LiveTvTunerStatus.LiveTv; } else { status = LiveTvTunerStatus.Available; }
-                            tuners.Add(new LiveTvTunerInfo()
+                            tuners.Add(new LiveTvTunerInfo
                             {
                                 Name = name,
                                 SourceType = string.IsNullOrWhiteSpace(model) ? Name : model,
@@ -385,10 +385,11 @@ namespace MediaBrowser.Server.Implementations.LiveTv.TunerHosts.HdHomerun
             await GetChannels(info, false, CancellationToken.None).ConfigureAwait(false);
         }
 
-        protected override async Task<bool> IsAvailable(TunerHostInfo tuner, string channelId, CancellationToken cancellationToken)
+        protected override async Task<bool> IsAvailableInternal(TunerHostInfo tuner, string channelId, CancellationToken cancellationToken)
         {
-            // TODO
-            return true;
+            var info = await GetTunerInfos(tuner, cancellationToken).ConfigureAwait(false);
+
+            return info.Any(i => i.Status == LiveTvTunerStatus.Available);
         }
     }
 }
diff --git a/MediaBrowser.Server.Implementations/LiveTv/TunerHosts/M3UTunerHost.cs b/MediaBrowser.Server.Implementations/LiveTv/TunerHosts/M3UTunerHost.cs
index bd0feb5737..e19b17ca42 100644
--- a/MediaBrowser.Server.Implementations/LiveTv/TunerHosts/M3UTunerHost.cs
+++ b/MediaBrowser.Server.Implementations/LiveTv/TunerHosts/M3UTunerHost.cs
@@ -210,7 +210,7 @@ namespace MediaBrowser.Server.Implementations.LiveTv.TunerHosts
             throw new NotImplementedException();
         }
 
-        protected override Task<bool> IsAvailable(TunerHostInfo tuner, string channelId, CancellationToken cancellationToken)
+        protected override Task<bool> IsAvailableInternal(TunerHostInfo tuner, string channelId, CancellationToken cancellationToken)
         {
             return Task.FromResult(true);
         }