I would say that LinuxICE or nGhost which is available also in Ubuntu by adding repo. I tried it and its fine but I prefer stronger or more enhanced handling of my media. That's why I use XBMC for my music and movies. I am starting with that and will work on the other solutions later. See my work log:http://www.mp3car.com/vbulletin/work...urf-carpc.html
But yeah I am a hardcore Linux fool myself and I would suggest LinuxICE but there are others for linux. You just have to google. Too bad Centrafuse is not available on LINUX. Looks like a nice product.