You need to leave those two file where there are since they were made by LimeWire. Do you have any other MP3 Player installed other then QuickTime? Try the following. Search for "QuickTime Updater" and run it. You might have QuickTime installed but some of the files might not be there. You also could be downloading a different kind of audio file. Open LimeWire and search for "Beatles" and make sure you download an MP3 file.