Many people already have extra computer parts lying around.
Rather than just letting these collect dust, put them to use and save money at the same time. An MP3 player that uses common parts can be built for very little money, and with my detailed plans it s easy to do. At the end of 1996 I made an MP3 player for my car. In 1997 I started a web site to provide general information on how to build a car MP3 player. I then offered this package for sale on my web site.