I haven't been using limewire very long, and I tried to download one particular audio file, and instead of being seen like a little quicktime mp3 icon it is just blank like a document. I'm on a mac and I have itunes, but I'm happy using quicktime because the itunes interferes with my burner. I have downloaded other audio files since then and they seem to work fine. I tried your suggestion of going to my library, selecting the file and hitting launch, but nothing happens. I tried to dowload this particular file twice from different computers and neither time it would work!! I don't know what else to do, I'm hoping you could help.