Media Center from an old junk computer Answered

I have 2 old computers now my idea is to make a media center Only music no videos.
I'm searching buddies who have knowledge in DOS & windows.
The idea the computer will be solely used for music.
When turning on the computer It will automatically load that program like Windows media center or XBMC. where you select the music to be played all day long 24x7.
Hey Genius's please help me with the ideas.
I'll be thankful to you
If possible can u email me at ominidash@gmail.com