I think your fine. The latest version of QuickTime for Mac OS 9x is 6.0.3. I don't think it maters that much if you have the latest version. Here are two things you could try. Make sure you have all the files for QuickTime installed. To find out search for "QuickTime Updater." And open it. If it tells you that it need to install some files let it install them. If it says that all of the QuickTime software you have installed is up to date. Then your ok. Next thing is to download a song from LimeWire and try to open it. If it wont open try opening it from with in QuickTime. Good luck. Last of all is that I could send you a song that I have downloaded and see if you can open it? Here is a question for you. Do you want your songs to open up in QuickTime or iTunes?