The 2wire can most assuredly not be configured the way you want.
This can:
http://www.memoryexpress.com/Products/MX33795
Or this:
http://store.apple.com/ca/product/MB...press-AirTunes
The Airport Express would be an interesting choice, since you could line out from it to your audio gear, and then airplay (stream) music to your entertainment centre, while also having ethernet-to-wireless bridging for your bluray player.