refactor and fix Music (getAlbumInfo must return unfiltered artist)
refactor and fix Music (getAlbumInfo must return unfiltered artist)

jcnoir/dmix,0359xiaodong/dmix,philchand/mpdroid-2014,philchand/mpdroid-2014,joansmith/dmix,philchand/mpdroid-2014,abarisain/dmix,hurzl/dmix,jcnoir/dmix,philchand/mpdroid-2014,hurzl/dmix,0359xiaodong/dmix,abarisain/dmix,joansmith/dmix