I've just set up a whole house audio system that transmits to two different rooms (one with an AppleTV and the other with the new 802.11N Airport Express, both feeding DACs with optical fiber). The problem I have with the room with an Airport Express is the DAC doesn't lock instantly to the signal and I lose 2 seconds at the start of songs when I change tracks or start playing for the first time (cross-fade avoids the issue on playlists). Well, I know I could look for a DAC with no delay locking onto the signal, but I figure I might as well go buy another AppleTV if I'm going to spend $200+ (not a huge believer in big DAC differences in 2008 even though I have $2000 speakers upstairs; the ear is simply incapable of hearing 0.1 dB differences, especially when even good speakers are usually +/- 2 or 3dB to begin with. In any case, I decided to try out Airfoil and see if it made any difference. Sure enough, it seems to buffer the audio output or keep the signal alive or something as I no longer lose the start of the songs when I output via Airfoil instead of straight AirTunes. The problem I encountered, though is that when I play via Airfoil, I'll get clicks or flat out drops every so often as if the Airport Express is losing the signal due to a bad connection. The thing is when I don't use Airfoil, it plays perfectly with no clicks, pops, crackles or drops. So I'm guessing the issue is somehow with Airfoil. I know they had to reverse engineer the AirTunes protocols and what not so I'm guessing it's simply not as reliable. But I have not thus far found anyone else complaining about such issues so I'm wondering if anyone has run into something similar? If so, is there anything I can do to improve the situation. It's not worth buying a product that screws my sound up or drops the signal once in awhile. That's worth than missing the first 2 seconds of a song, IMO (and at least I can solve that another way via a new DAC if I have to). While I'm at it, I should mention I tested both Signal and Remote Buddy with my iPod Touch as a WiFi remote control and I thought I liked Signal better (it has noticeably faster response and can select multiple speakers to play at once), but after buying a license, I discovered it apparently can't play an album when you select one and pick a track from one. It just creates an on-the-fly playlist for the one song instead of the whole album. I'm not going to click every track onto a playlist to play an album.... I'm very disappointed. I should have tested it more thoroughly before buying. I've sent feedback to the author. Hopefully, he'll improve it and add an automatic startup option as well. Meanwhile, I bought a license for Remote Buddy. It's a little slower and can't select multiple speakers from the iTunes interface (might be possible to configure it; I haven't really looked into how to customize it) and it's a bit slower to respond, but it creates full album playlists on the fly and pretty much does everything else I need it to do. It's 20 Euros. I guess that means it could cost us U.S. customers a good bit more due to the weak dollar (signal is $25 US), but I'd rather pay more for a product that does what I need it to do.