Cue quick browse of Amazon. Hmm, while there are some cheap USB sound 'cards', I have never been convinced by those, and the most interesting of the PCI cards isn't fully supported under Linux (it will make noises, but the features you're paying for don't work because the makers won't release either drivers or the specs to enable other people to do the drivers).
Ah, I have an old Turtle Beach Santa Cruz - that may well work now. A look suggests it does (under Linux anyway, TB abandoned it in 2004, so Vista, Win 7, Win 8 or any 64-bit system is out).
But I can't find it. It's not like me to chuck something, so did I give it to someone?
Alternatively, does anyone have a spare reasonable PCI sound card? Or know that USB ones will actually do digital copies of their output?
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