Now to see if I can get my JP1 remote jiggered to run this thing

Ah, you gotta love the JP1. Coolest hack around.

It's been months since I've poked around that scene, since I haven't changed the equipment in my living room for months and haven't needed to reprogram it. But the last I looked, there were more Tivo tricks than you could shake a stick at. You should have no trouble getting programming into your JP1'd remote.