oaqm, so would I. Check this out:

http://www.jvc.com/press/index.jsp?item=574&pageID=1
It says it has "an Ethernet connection" that allows access "to multiple computers through a wired or wireless router" and so I am guessing that it has to be wired to the router to access PC's in the home. I have cable connected to the TV and for convenience the router is right next to the TV and outlaw pre/pro, so this would not be show stopper.

According to CNET, it plays MP3, PCM, WAV, WMA. no mention of .M3U playlists.