iTunes to stereo.

Hi there,

I have a fairly high end stereo (Redgum amp, Krix speakers) and would like to use my itunes library through it. I have the new airport time capsule and the new macbook pro. My problem is its a fairly big house and the stereo is on the other side of the room - all open plan - and it looks like i need an airport express across the other side plugged into the stereo. But, do i really need an ethernet cable to go into it? That would be a hassle. The cable would have to cross the room and a hallway and my toddler would have a field day with it.

Can the express and the capsule talk to each other wirelessly? Do they really need to?

Can't move the stereo. Too difficult.

What should I do?

Any ideas appreciated

Dav9000