Fixed encoding issue

Emby.Dlna/PlayTo/TransportCommands.cs

@@ -4,6 +4,7 @@ using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
+using System.Security;
 using System.Xml.Linq;
 using Emby.Dlna.Common;
 using Emby.Dlna.Ssdp;
@@ -175,12 +176,12 @@ namespace Emby.Dlna.PlayTo
             if (state != null)
             {
                 var sendValue = state.AllowedValues.FirstOrDefault(a => string.Equals(a, commandParameter, StringComparison.OrdinalIgnoreCase)) ??
-                    (state.AllowedValues.Count > 0 ? state.AllowedValues[0] : value);
+                    (state.AllowedValues.Count > 0 ? state.AllowedValues[0] : SecurityElement.Escape(value));
 
                 return string.Format(CultureInfo.InvariantCulture, "<{0} xmlns:dt=\"urn:schemas-microsoft-com:datatypes\" dt:dt=\"{1}\">{2}</{0}>", argument.Name, state.DataType ?? "string", sendValue);
             }
 
-            return string.Format(CultureInfo.InvariantCulture, "<{0}>{1}</{0}>", argument.Name, value);
+            return string.Format(CultureInfo.InvariantCulture, "<{0}>{1}</{0}>", argument.Name, SecurityElement.Escape(value));
         }
     }
 }