Very inspirational Acantha-Tara.  Each person needs to get themselves over it.  Whatever 'it' is that happened to them.  Maxine said in one of the sermons that a lot of the anger comes out with the new spiritual awakening, but the meditations have helped me greatly in getting over things.  ...

Try radio shack on line - I think its www.radioshack.com.  I think they have some.  I can't find them in town either.  I have been trying to make the machine too.  Edmund Scientific may be another source too.  Someone mentioned using the volume controls of an old radio. goood luck...