I cant see my list of songs

Question

when i turn on my mp3 i go to my play list and all it says is list empty ..but then i try to go down ..cuz there like lil boxes in a row underneath it then it freezes up so i ahve to troubleshoot it. but when i plug it up to my computer it says i still have all my songs.. but if i go to my recordings i can look at them on the mp3 . and listen to them but ic ant do nuthin with my songs.. wats the problem .. and i dont have a cd to it to repair it..hope u can help me