public CS_AlbumInfo(CueSheet s)
 {
     _sheet = s;
     if (s == null)
     {
         base.ArtistName = "none";
         base.Title      = "none";
     }
     else
     {
         base.ArtistName = s.performer();
         base.Title      = s.title();
         base.ArtworkId  = s.getArtId();
     }
 }