I am on my second unit having returned the first - this one is no better. Problem is with MP-3 playback on burned CD-R's - using two different burners. Awful noises (screeches & squeals) at random intervals (will play file fine - then have problem on later play). This with 650MB CD-R's (different brands), all at 128 bitrate, all at 192 bitrate also. Unit locks up randomly to the point I have to remove & replace batteries to get it back.This unit is junk for mp3's. Plays music cd's great.