On September 11, 2015 at 19:11, aeneas1 said...
i'm a little confused, i didn't think the mx-500 remotes were software programmable, at least not via rs232...
It's been about 10 years since i looked into it, but IIRC, IRClone was a software/hardware editor package that sends the file you created to the MX-500 via it's cloning feature, instead of physically connecting the remote to your PC.