you can get live CDs, however you typically can't save anything you do unless you have some other storage, e.g. an external hard drive or network storage. there are some multimedia specific linux distributions, notably demudi and agnula, though they aren't always that up to date, and the linux audio development area moves very, very quickly. a better solution is to dual boot your PC, i.e. share your hard drive with both windows and linux. that's what i used to do; just means you can use linux when you want, and windows when you want. getting started can be a bit difficult, especially if you are new to linux. having a good sound card with low latency ability is a benefit, but not required. what soundcard do you have? i seem to remember you were about to buy (or had just bought) a new PC last time we spoke. if you want a demonstration, feel free to drop by and you can decide for yourself if it will be of use to you. main applications: HDR/multi tracker: ardour (like ACiD/cubase/logic) sequencers: rosegarden, muse (like cubase/reason) drum machines: hydrogen (like fruityloops i guess and/or reason) synths: zynaddsubfx, amsynth, qsynth/fluidsynth (like reason's NN-XT sampler/subtraktor synth) wave editors: rezound, audacity (like soundforge) there's loads more, but they are the ones that i use everyday. hope that helps