Mp3 problems. mp3 player. have 256 flash copy songs to it play playlist, songs get distorted.

Question

mp3 player. have 256 flash copy songs to it play playlist, songs get distorted. different songs at different time. also plays 1 song, stops and you have to push ff to start playlist. plays 5 songs stops and hit ff to continue again. does this radomly. noone seems to have a clue? help!!!!!!!!!!!