Experienced this many times, its usually caused by a dodgy disc, and forces your cd drive into PIO mode (ie. software mode) as opposed to DMA (hardware mode), this is why your mp3's are skipping when you are burning discs, as the CD drive is hogging all the system resources. Theres a simple fix... Download this file, run it and reboot. I don't accept any resposibility for any damage it may do, but I have come across this loads of times and this has always fixed it. http://winhlp.com/tools/resetdma.vbs