back to the original question of studdering in winamp, I would like to pose, that when I first purchased pcdj, it would studder on me when I opened or closed files while playing pcdj, I worked around it by leaving the explorer window open in the background while using pcdj however, I found the solution to my issue in attempting to track down another issue with a totally different program. Going to your winamp icon on your desktop, right click it, click properties, and then click the compatibility icon, change the standard run in windows 95 to the closest version of windows u are using. May not be an answer for everyone, but it certainly cured my studder issue in pcdj and may be of some assistance in winamp.