Interesting, I was having sound problems just yesterday but this is a 20 inch iMac.
Problem; No sound at all, went on for 2 days. and got the same theres no output devices listed. ... <-- working now, well so far.
I had mine back but gone again. Upong further searching two possibilities which I don't hold too much hope for.
1) A wee spritz of WD-40 in the headphone jack hole.
2) Trash Quicktime and reinstall.
I'm doing 2 since I cannot find any WD40. How the hell does that happen? I had maybe six cans of the stuff scattered through the house and shop. I'm about to panic with a hurricane approaching. At least I have plenty of duct tape and Bag Balm.
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