Updated the code to allow a search to be made from UI to iTunes and return a mock result.

src/NzbDrone.Core/MetadataSource/ISearchForNewSeries.cs

@@ -1,10 +1,12 @@
 using System.Collections.Generic;
 using NzbDrone.Core.Tv;
+using NzbDrone.Core.Music;
 
 namespace NzbDrone.Core.MetadataSource
 {
     public interface ISearchForNewSeries
     {
         List<Series> SearchForNewSeries(string title);
+        List<Artist> SearchForNewArtist(string title);
     }
 }