Hi Pmeister,
I was in a similar situation to you for a long time. I was running my music all of my mac mini into my amps and speakers and it sounded... a bit horrible. So I thought the natural next step would be to bung a DAC on the end of the mac and get things going.
Except it didn't.
I know everyone will say 'Sooloos is a waste of money, you can get just as good results by adding a DAC to a mac mini', because I have spent countless hours online trying to do just that. I reckon I've read almost all the articles going on macs'n'DACs, and whilst by no means an expert, have backed up the theory by trying various DACs at different price points.
At first I thought it sounded thin and digital because I wasn't spending enough on the DAC (and yes - I know it IS digital but we are all striving for that lush analogue sound arn't we?). So I tried what I thought would be the ultimate solution - the Chord QBD 76, which everyone has said was the best thing since sliced bread and, having heard and liked a lot of Chord stuff in the past, I was rather excited about. So I recruited my best buddy who has the most discerning set of ears this side of Memphis, and had a listen.
The verdict? Still horrible, but with extra chrome.
Then I was pointed in the direction of Sooloos, and after having been demoed the MC200, and then the MS600 (which, incidentally produced some of the MOST jaw-dropping sounds I have heard in a long time) I couldn't believe what a bargain this �2000 box of tricks was. Just to recap, you get:
1. amazing sound
2. incredible user interface
3. potential upgrade paths (MS600)
4. potential multiple zones (MS600/MC600)
5. an insight into music you haven't heard in years because it sits inaccessible in a jewel case - I'm listening to stuff now I haven't heard in AGES and loving it
6. good WAF (should that be GAF?) as it's a relatively small, quiet box that can sit out the way
7. the ability to open your hifi up to other people - I've had so many people who arn't 'hi-fi people' playing and loving my music because the Sooloos is so easy to use
8. it's not dependent on knowing loads about computers (other than a couple of teething probs

see 'MC200 troubleshooting for more details'...)
9. brilliant iPhone/iPod/iPad remote facility (and the App is free)
Not to sound like I'm too enthusiastic or anything...