The AE is designed primarily as a wireless access point and the ability to connect it to a audio system is an add-on.
There are two ways to get the audio stream from the AE to your receiver. You can get an analog signal by using a stereo mini to RCA cable and connecting to any of the line-level inputs on the receiver. Alternatively, you can use a mini-toslink to toslink cable and get a digital signal which would go first to a digital/analog converter and then on to the receiver. Both the analog and digital outputs come from the same jack on the AE and the output you get just depends on which cable you use.
I've used the AE only with a Mac and can't compare it to the other options you have but I do think it could work.
There are two ways to get the audio stream from the AE to your receiver. You can get an analog signal by using a stereo mini to RCA cable and connecting to any of the line-level inputs on the receiver. Alternatively, you can use a mini-toslink to toslink cable and get a digital signal which would go first to a digital/analog converter and then on to the receiver. Both the analog and digital outputs come from the same jack on the AE and the output you get just depends on which cable you use.
I've used the AE only with a Mac and can't compare it to the other options you have but I do think it could work.