wolfxin,
The star rating refers to the reliability of the connection itself - not the quality of the file. The quality of the file you get has nothing to do with Limewire - it is the file you downloaded from your host. If it is corrupt Limewire can't help it, they don't generate files but simply connect you to hosts that offer them - good or bad.
It sounds like you could have a player or CODEC issue. If you are using the Limewire media player get something else to play your files. You might try Musicmatch for a decent free player - get it here -
http://www.musicmatch.com/download/f...tbasic_jbpromo
If you think MP3's suck then don't download them. There are other files out there.
Good luck,
Norm