Anyone played with Volumio (http://www.volumio.com/)?

I have one on an old B model raspberry Pi I wasn't doing anything with hooked to a USB DAC to a Yamaha Amp that is then powering 6 speakers in stereo at home.

I generally use ZM as a playlist - which is on iHeartRadio.  You can find the stream fairly easily and add it.  But it looked ugly in volumio as they didn't use a standard artist name/song name in the play list.

So I had a hack around today and now have it parsing the track name properly.

Anyway, Was thinking about putting my pi in a bigger case with an LCD screen - then look at pygame as a UI.  For a basic Spotify/Airplay/Web Stream machine.

Ideally I'd like to remove my yamaha app which is pretty big and replace with some sort of amplified speaker switch to independantly control the 3 sets of speakers (and hoping ot add a 4th set).

Would this be a project where I should build an amp with a couple of kit amplifiers, or  does someone know of a reasonably priced product that would do it.  Ideally something shallower that about 350mm as it's in a cupboard.  I know some of the home automation places seem to sell amplified speaker switches, but they seem to be really expensive.