portable music player(coputer based)

I have seen few electronic projects in which using low cost computer components they have been converted into music systems with lcds on the front side..
Here are a few specs
I gues it needs bit of pic programming
it use a low speed processor 100Mhz..


I want to make it my self too ...
can any one help..

Check this site:
https://www.pjrc.com/mp3/schematic_revc.html