Glad to be of --some--help, though I can't say that I feel like I've had much useful info... one of the other regulars may get check back and be more knowledgeable, on Monday.
I should also point out that I've spent a considerable amount of time repairing computers and at different times --pneumatic tools. I'm not MS certified, or anything. It's mostly about recognizing what's repairable, what's junked, and what you can break resting a finger on. Sometimes, it's just seeing what's physically broken, or out of place. (Being able to actually get things apart, is also a huge plus.)
I'm pleased to hear we're somewhat copacetic, on the Karma. In my Dark moments, I sometimes wonder if I'm a world-class crack-pot & generally cranky guy. I tend to be pretty verbose, because I try to think things through, and I'm not gifted at summarizing.
This site is totally user supported/maintained, where Riovolution.com was at least related to the out-of-business Company, Rio. (Apparently, it's "powered" by Kittens ---as you'll have seen on the menu page.)
I used that site only a little [it's how I found this one], but a bunch of members here were regulars there, too.
I'm much tighter with my cash than a lot of the Posters here. (I have this paranoid nightmare, about gadgets costing hundreds of dollars, that co-incidentally happen to fit --a little too easily-- in a toilet bowl...) People make a big deal about the iPod Touch or video. They just seem like just a Massively over-priced toys --with a gimic, to me.
Keep in mind that the Carbon is actually a newer model, which --for some reason-- doesn't have Ogg Vorbis support, either.
Members here have probably been unknowingly competing in eBay auctions, for years. I got my backup [dirt cheap], with 7 Forges ---the condition of the whole pile was listed "not working, some wear, no idea what's wrong, as-is."
I bought my working one from s2G, because I was bidder #1 on an eBay auction, where I thought the "Buy it Now" price was too high... Then, with like 6 hours left, I was out-bid by bidder #2 (happens to me, a lot) ---and a couple days later, the same seller used the same description on a "Buy it now" only listing. (That one didn't sell, either.) The price he couldn't get, I gave s2G, and got the same thing --without dock-- but with a 6 month warranty... (and I still think of that Seller of abuse on eBay)
I love the eBay auction process, as a bidder --but there are too many people there who think their stuff is worth a lot more than what a simple, honest auction sometimes brings. That's Free Market Capitalism, as far as I'm concerned. (it's beautiful!)
Tell him about the Twinkie...