I recently came across this problem as of Tuesday evening. Suddenly having Winamp open and playing had my sound crackling and video slows down while I browsed the internet with Firefox 3. Started looking for a solution to this problem but none of them matched what I had. I decided to scan for spyware and adware but that only yielded the usual cookies and trackers which I got rid of. Tried updating my sound card with some "critical" items as the website called them. That proved useless when one part of the update failed to pass the "Windows Logo" so I canceled that part. When I finished, all speaker settings were disabled so I had to rollback.
There are no actual driver updates for my SoundBlaster Audigy SE card. Apparently Creative Labs doesn't care for this card as most drivers clearly say "DO NOT INSTALL into SoundBlaster Audigy SE, Audigy 2, etc.".
Adobe's Shockwave Player, Shockwave for Director, FireFox3, Winamp are all updated as well. This is really boggling my mind. Is there a solution to this problem?!
Windows XP Pro 32-Bit Serv. Pack 3
Intel Dual Core 2.40Ghz Processor
2.0GB of RAM
eVGA Nvidia GeForce9600 GT (forgot the RAM...512MB maybe?)
MSI P35 Neo2 Motherboard
CoolMaster 1000watt Power Supply