I've sent HOURS on multiple occasions trying to get WDS / airtunes to behave. Sometimes it just doesn't want to play. Very flakey. Also very time-consuming. The pairing process is very slow, and when it doesn't feel like working, it just doesn't and gives you no helpful feedback. Apple will just give you more ways to kill time like rebooting both, try try again, and restoring firmwares, which basically never helps.
