I have an old EMachine that i'm using as a Windoze based MP3 Jukebox, but now that i'm gettin to know the penguin a bit better, i want to convert.

Basically, all it needs is support for Mounting a windows share (the MP3 Directory), playback of MP3, and internet.

the machine is low on resources though. Celeron 366, 384MB SDRAM, onboard sound and video.

Any Suggestions? I was checking out http://www.opensourcelab.it/, but i'm wondering if that distro will be a bit bloated for my needs?

Try Slackware, it runs very well on low-end machines. You probably don't need X which makes it (or Debian) an even better choice.

yah... i keep seeing slackware in the forums for anything to do with MP3 jukeboxes.

but i do want to keep X so that users have a way to point and click. if i ever get around to doing an LCD with it, then i'd surely ditch x.

is there any interface out there that's similar to the PVR/DVR style? like, an all in one seamless look, but solely for music?

Well, My "Jukebox" runs Slackware 9.0, it's a P3 w/ 850 mhz chip......this box does not access the Web at all, so I uninstalled alot of un-needed programs.....and stripped out alot of the development stuff also......
I encoded all my Music CD's to .Ogg files and use mplayer to play them.
sound card is a SB Live 5.1 and it uses the emu10k1 driver and emu-tools to enable the digital output of the card........and I pipe it all to 2 sets of Boston Acoustics speaker sets.......(2 sub woofers and 4 satellite speakers)
It all Rocks, I filled up a 10 gig drive with all my music!!