ASUS P6X58D-E X58 ATX LGA1366
G.SKILL F3-12800CL6T-6GBPI Pi Series 6GB 3X2GB DDR3-1600 CL6-8-6-20
2x Samsung Spinpoint F3 HD103SJ 1TB SATA2 7200RPM 32MB
It hasn't always been here, it's just been recently. For example, while I am playing SC2 if I have youtube running in the background (or any sound, for that matter) my game goes sluggish. The second I close the source its fixed.
To a more severe degree, I always watch a stream (day9tv.blip.tv), and in the last couple days it starting completely locking up my computer the split second it is finished buffering. I've tried uninstalling/installing programs, using different browsers (IE, Firefox, Opera) and such... I just want to watch the video =[
Check airflow, or buy another fan, or a new sound card
Typically sound devices don't require fans... but if there is a hardware problem I guess that would be what is causing the additional heat. If all the airflow is fine, then it won't be long till the device breaks all together.
It could also be your video card? Have you tried running some videos, or a video benchmark like furmark and see if that causes anything? (disable sound during tests)