The plans can be found here on Instructables site.

Parts were obtained from Radio Shack (The 9V battery and the 1/8″ plugs.)

The majority of components were purchased from a Wm. Dandreta Company. This is a find for those of us in Providence. If you didn’t know about it before, you know now. A word of advice, peruse their web site and get part numbers. Then call or email it in and pick it up later.

It is a place that I’d love to have say a thousand dollar shopping spree. It’s that good. Those of us who’ve dealt with RS and Jabbour know that we needed a good electronic parts distributor. The above is the real thing.