Hi I would love to set up a music system so that I can play music from my pc in various areas in my house - over 3 floors, including a roof terrace. Having done some research I have seen that there are wireless systems available, although I have a number of concerns about how successfully it will function. Firstly, my laptop runs on XP. Then, my house has very thick walls. I have seen that some systems run on bluetooth - I'm not sure I have this on my pc (Fujitsu Siemens, Amilo). Finally, it would be great if I could have music playing in different locations simultaneously. Oh, and I would like to run it from Media Player, or something similar. I would appreciate any advice available.