Apparently both doubletwist and the stock music player on my SGS I9000M are very selective in which songs to present me. DoubleTwist had significantly fewer songs presented than the stock player, and once I noticed this I switched over. After using the stock player for a while I realized the same songs were playing over and over and it was really getting on my nerves. I realized all of the same songs were listed on that player, and hundreds of others were suddenly missing. Oddly enough, if I "search" for a missing song, it shows up no problem - it's just not in the track list or under the album/artist listing etc. Anyone else finding this or know of a fix? very weird bug indeed.