Whenever I'm playing music in iTunes 4.8 on Windows XP Pro and open Firefox, if I load a page or download something, iTunes stops the song for like a second. Its REALLY annoying. I'm virus free, spyware free, and all hard drives are healthy. I have 1 GB of RAM and 2.4 GHz Intel Pentium 4 HT processor. It never used to skip, only recently... Please someone help.