along with advice from above post, goto your music tab. hit lower left softkey and go into your library and find the songs you want and make a playlist. all my music is on sd and all songs and album art show on tf3. im using mortplayer now to play songs and its a killer app. lots of skins anda alarm clock. free also. you should try it. link,
http://www.sto-helit.de/mobile.php