Just a couple peeves with it so far:
- If I'm using Camino, Amazon doesn't believe I've installed their downloader application, so I have to switch to Firefox.
- You can only download files once. They don't get saved in your account library or anything like that.
Update, 10/20: Support responded promptly, saying they were looking into the problem. So I waited a week and then wrote in again asking for an update. They responded again, saying they had taken that album down and would make it available again, at which point I could try downloading it again and see if it was any better. After a week of checking every day and finding it still unavailable, I wrote in again. They couldn't tell me when it would be ready, but said to just keep checking. Sigh. Anyway, it finally made it, and I downloaded it again, and the tracks are still screwed up. Back to the drawing board.
One other annoyance, too: They use browser cookies to determine whether you've installed their downloader app. If you happen to clear out your cookies, they force you through downloading and installing it all over again. Ugh.
Update, 1/10/08: I happened to check back today, after forgetting for a while, and found that the album in question (Jason Webley's "Only Just Beginning") is back up. I downloaded it and it all worked perfectly. So we got there in the end.