There are also alternatives to using a general purpose computer, and some say they are better. For example, while I currently use the Lumin S1, I started with a Bryston BDP-1. Basically, it is a dedicated Linux computer optimized for playing digital files. Plus, it looks a lot better in the rack than a computer.
I think a dedicated file server is probably the best audio component I have ever had. Once you have ripped CDs, and/or downloaded files, you can just listen for hours of uninterrupted music.
Whatever choice you make, have fun.