I have used One Web in the past, it's great at making playlists but is very limited in other ways, basically to use all the features you have to be running windows and i could never figure out a way to make it play FLAC etc...

It's a great front end though.

I now use Slimserver which has the advantage of hardware support, but also has multiple software/streaming based solutions for playback on PC/Mac etc... The server software is free, it needs to run on a machine, but I guess any solution would and I am yet to find a better solution to mp3 playback.

Cheers

Cris.