Audio Poping in Captures?

[Prospero]

I have some capture problems with my Marvel G400, my audio is poping on the caps. I also seem to have developed the infamous green flash problems. Any suggestions? I have seen posts on lowering unused audio levels, and disabling dma. Any other suggestions? I also don't seem to have a dma tab on the hd in the device manager. I am using a msi athlon board with amd busmastering drivers. Any ideas?
Thanks for your help.