/// <summary>
/// Gets all playlists that are present in iTunes library.
/// </summary>
/// <remarks>
/// The playlist will also be indexed in playlistLookupTable with IPlaylist as key and IITPlaylist as value for easy retrieval of iTunes COM objects.
/// </remarks>
/// <returns>An enumeration of all playlists in iTunes. </returns>
protected IEnumerable<IPlaylist> GetPlaylists()
{
List<IPlaylist> playlists = new List<IPlaylist>();
IITSource library = app.Sources.ItemByName["Library"];
foreach (IITPlaylist item in library.Playlists)
{
IPlaylist pls = new Playlist(item.playlistID, item.Name, false, PlaylistKind.Playlist, new IITTrackEnumerator(item));
playlists.Add(pls);
playlistLookupTable.Add(pls.GetSafeName(), item);
}
return playlists;
}