Yes. I built a JP1 cable with parts from Rob Crowe of hifi-remote.com. I also downloaded everything relevant I could find from groups.yahoo.com/jp1, including the Outlaw load file. I had to modify the file to my liking, adding buttons for functions that weren't on it. I also changed the protocol, which was wrong on the spreadsheet. Everytime I get a new piece of equipment, the first thing I do after turning it on is reprogram the remote to control it with macros.
I have young kids, so I keep it simple, but they know how to work it now, from turning on the whole system (with one button) to controlling the new 5 disc changer.
My only gripe is that you can't relabel the buttons, but I wouldn't trade it for a touch screen.