Adding MP3 to your project

A nice instructable for adding MP3 to your project for about $3.

Basic idea:

• get a cheap MP3 player.  A Miniclip is about $3 on ebay.
• open it up. remove the battery
• power via your project
• solder some wires to play and pause pads
• set the output of these line high
• to "push" the buttons, set the line low for a short time