Any song with a bitrate of 80kbps is not even worth listening to. I never download any song with a bitrate of 128. And I always convert the song to 320kbps after I download it. So, in my opinion you shoulden't be too concerned. But the problem may acutally be with the media player. Try the free version of
WinAmp and see if your problem persists. Good luck.
deepblue