can't play files
 

I was able to install LimeWire and can download songs, but when I try to play a song nothing happens. After I tried several times to launch a mp3 file a window popped up with a message indicating the execv mplayer file was not found.
Can you all help?

Is sound working normally outside limewire? I don't think you have mplayer installed. You can either use the limewire internal media player (Tools->Options->Player) or the media player of your choice (Tools->Options->Helper Apps) and modify as necessary for your media player.