I have recently set-up a TC and would like to use my AirPort Express to play iTunes through my system. How do I connect my TC to the AE using WiFi?
Tick the box in the wireless setup of the TC, allow this network to be extended.
In the AE setup, use extend a wireless network instead of create a wireless network.
A quick google will get you all the info you require.
check out the this, very easy setup:
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