Looking on Apple's website, I can't seem to find out how far an Airport reaches. I'm annoyed that my Airport Express doesn't reach the bathroom in our 1 bed flat (about 20 feet away from the APE) so, since the APE has died (just 14 months after buying it) I thought I'd take the opportunity to but an Express. But that apparently has radio output of 20dBm - same as the Express. So that's the same reach, am I right? Also, why doesn't Apple offer Airtunes on the Extreme?