Can't Launch MP3 Files
 

I have a Mac G4 with OS 9.2. After loading the lastest version of limewire, I find that I can no longer launch MP3 files as they are downloading. Worse. when they are finished downloading, with the "mp3" extension, I can no longer double click and have them launch, because I get a message asking me what program I want to use to play the program. In other words, double clicking on the song, on the "launch" button, or on the file after it is downloaded will not automatically launch the music. I have set I-tunes to automatically launch files, but this does not work either. What is going on??