Sadly, the "buy from FM" feature quickly reminded us why we can't stand music radio, and while we could easily get the meta data for the station we tuned to, specific (or sufficient) song data was more rare -- on our fourth or fifth try we finally nabbed Rod Stewart's Maggie May, and the actual download process was painless.

ENGADGET: Zune 3.0 hands-on Hands-on

These are "meta search" fare sites, and although they don't offer quite the travel date flexibility as some others do, they often include fares that the airlines sell only on their own websites.

CNN: The skinny on finding airfare deals