I'll try to have the schematic done in a week or two but no promises. :) What I'll probably end up doing is adding a draft schematic and having people take a look to see if they notice any errors.
The parts listed on the Instructables page is pretty much the ones I would (and did) use. The only differences are listed on the page:
1) I'd use different mono jacks, only because they'd be easier to solder.
2) I'm still looking for a satisfactory Bluetooth dongle. The ones I've been using have a short range(20-30 ft). Until this gets ironed out you may have to buy more than one. Most of them have been cheap (< $10), which may be why I'm having problems. ;)