fix portable and 3.5 project references

MediaBrowser.Model/Session/PlaybackStartInfo.cs

@@ -0,0 +1,21 @@
+using System.Collections.Generic;
+
+namespace MediaBrowser.Model.Session
+{
+    /// <summary>
+    /// Class PlaybackStartInfo.
+    /// </summary>
+    public class PlaybackStartInfo : PlaybackProgressInfo
+    {
+        public PlaybackStartInfo()
+        {
+            QueueableMediaTypes = new List<string>();
+        }
+
+        /// <summary>
+        /// Gets or sets the queueable media types.
+        /// </summary>
+        /// <value>The queueable media types.</value>
+        public List<string> QueueableMediaTypes { get; set; }
+    }
+}