As already mentioned, the drop outs can be very annoying, and hard to pinpoint the cause. If you are using a Mac, Leopard doesn't support airtunes any more either. I use a usb from my Macbook to a Bel Canto Dac3. Because the dac is 30 ft from the computer I have to use a powered usb cable which works great. Bel Canto said this is much better then a 30ft toslink cable. I tried both and agree. So it wouldn't hurt to ask the manufacturer of your dac. I know Bel Canto has a new USB link product which is supposed to sound better, but it is 500 bucks and I haven't heard any feedback yet. Drop outs really suck.