where to start

So my computer that was fairly old died the other day. I have mostly been a PC guy but don't mind mac. I would like to start setting up a computer audio system.

I would like to do a nas server and have all my audio files saved on it and then stream wireless into a Squeezebox in one room and then use a laptop for the other.

I guess I just don't know what is better for doing this mac or PC? I see a lot of guys on here running mac. I don't plan on using iTunes and I will be using a PS pwd in the main system.

I don't know what benefit a mac would.have over a PC. My budget is around 1200 for the computer so I was looking at a mac book pro and PC don't even know where to start.