This is the beginning in a series of unknown length regarding controlling the Windows Media Player from remote machines. So far, I'm at the requirements phase. Next will come industry research (buy or build), but I'm pretty sure I'm going to build something anyway (even if there are perfectly usable buy options -- I'm just stubborn that way).

Here are the requirements in no particular format or order:

• I have a Server 2003 machine running with its audio output hooked up to the whole house audio system (okay, it's just two speakers in a different room, but there's a volume control in there, so I can call it what I want). The server houses the media collection and runs a uPnP server (TwonkyMedia) for the rest of the machines in the house to stream.
• I can play audio through the server if I remote terminal to the server, run media player, and choose some songs. That, of course, completely fails the Wife Acceptance Factor (WAF).
• What I would like is a service or application running on the server to be ready to play at all times, and have the rest of the machines (including handheld and smartphone) be able to dynamically change the playlist, start, stop, fast forward (most important) and rewind.
• I'd like this to run as part of Media Player. I'm not sure why, since SOA dictates that we're just exposing a service, not a particular technology. I think it's mainly because I'm used to maintaining the media library in WMP and I don't want to change.
• An added bonus is if there were a sidebar gadget for my wife's Vista machine (yes, I'm still on XP until some of the performance issues are worked out), and a 10' UI for the media center PC in the family room.
• Since the uPnP server streams media to all of the important places (laptop and media center), there's no reason to mess around with streaming the actual audio to the remote control client, though the now-playing art would be nice.

That's it. In those few, short paragraphs, I have managed to cut out a lot of work for myself. I'm looking for a media player with remote controls that run on smartphone, pda, xp, and as a sidebar gadget. I'd like it to run on server 2003 every time it starts up, be multi-remote control robust, and extremely fault tolerant.

Now, to the buy or build comparisons...