I too am having a problem launching limewire songs. I have been discussing this with Joakim and others in the Mac OSX forum by mistake since I'm running on system 9. I have done everyting I can think of. I've trashed Limewire and re-downloaded it, downloaded free iTunes, and still nothing. I had been using Limewire successfully, (songs or even portions thereof launching in realplayer)and happily until they prompted me to update my Limewire version. I did and since then no ability to launch. I can't get back to the old version of Limewire either. Can anyone make a suggestion?