I'm having a very similar problem on my iMac but it is MP 3 files it can't open. When I click "Get Info" it says it's a limewire document. It refuses to open in Quicktime Real Player or Windows Media Player. I too would like to solve this. Incidentally when I open the MP3 file it too triggers Limewire to open RATHER than the file ???? I am ready to eat nails I have uninstalled and reloaded the client still to no avail does anyone have a suggestion?