Thanks for your reply, Del.
I guess you could call it white noise, but I’m not sure. It sounds like a machine gun. A rapid series of pops.
I tried playing it through various AC3 decoders, like AC3filter and ffdshow, which play other AC3 tracks great, without success.
I’m still not sure if those pops are now permanently in the captured file, or there’s still some way to decode it properly.
Maybe I had to decode the AC3 stream, as it was being captured. For that I would need to build a special DirectShow graph with AC3 decoding.
leo