Created interface IPlaylist.
Merge branch 'NewLibrary' of github.com:deaddog/DeadDog.Audio into NewLibrary
Renamed Current to CurrentEntry
Merge branch 'NewLibrary' of github.com:deaddog/DeadDog.Audio into NewLibrary
Finished implementation of basic playlist.
Merge branch 'NewLibrary' of github.com:deaddog/DeadDog.Audio into NewLibrary
Albumplaylist and Artistplaylist added