Does Apple airport express work well?

Correction:
Long "audio" cables have high frequency roll off!

1000 GB ethernet cables routed through a house are a PITA, and give no advantage over "n" WiFi when streaming audio through an Airport Express or Extreme!

Rbstehno:

The Apple airport express is a router! It certainly can set up a WiFi network to support one to seven computers!

The current airport express supports "g" and "N" standards.

Wireless is the best way to go in normal sized house or apartments. Why hassle with cables? Works fine through normal walls and floors, but has less range through concrete or brick.

It works just fine for me. The Airport express is the same speed as the extreme! I never get any interference or dropouts! The "n" spec is Very fast!

You can stream HD video, and audio is no problem with the same speed!

Long cables "roll" off the high frequencies!