Most sounds on public upload sites are extracted resources or recorded sounds from after-market media, and I would rather not have them. The legality isn't really an issue. I guess my philosophy is, if I didn't make it, someone else did. If I can't say who, then I have no idea if they mind if I use it or not.
Thing is, if you go to these .wav sites, good utility sounds are pretty rare. A lot of the content there will always be fuzzy curse words, animal noises, guns, tire screeches, bad quality movie sounds, cartoon sound effects, and even more bad quality movie sounds and quotes. Lots of them.
The reason goes back to the definition of 'utility sounds'. Horror of horrors, I have seen a desktop machine whose sound theme was *completely* made up of bad quality clips from "Ace Ventura, Pet Detective". From Windows startup to mouse overs, to Windows exit. Everything. I still haven't recovered. For that reason, I don't think you could have a sound section for skinning. You couldn't get it through to some people that "LLLLOOOOSER" isn't a mouseover sound.
As I said, though, I would really dig a pointer to software that would let me make clicks, buzzes, etc. I'll google around for a while later when I have more than a minute to spend.
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