JAH,
Either the PMC10 or the Adicon will allow you to use any IR code to program it and turn IR into X-10. You could use IR codes from equipment you don't own. I use the PMC10 to add a few more functions to my Pronto/X-10 system because I ran out too. I am using the IR codes for an old JVC TV I once had. The TV went bad but the remote still worked. Any IR codes in the File section would work fine as long as they didn't interfere with your A/V system.

Chris Couture