The Creative Nomad Jukebox 2LX: a 2.5" hard drive-based MP3/WMA player, consisting of the following components:
Today I connected my USB WIFI adapter to my network-attached storage. The NAS, which runs Debian, has an 10/100 Ethernet jack, but wireless devices are so much cooler these days. So, by following these instructions, I was able to join my home wireless network from the NAS.
The NSLU2 is available for ~$50.