Gordon,
The best and least expensive solutuion solution will be one of the One For All remotes sold by Radio Shack, RS-15-2104, Setup Code Audio_0008. Thes are currently being discontinued and are ~$20.
The 2104 also has a JP1 plug in the battery compartment that can be interfaced with a PC and allows a wide variety of upgrades and programming. It also can enable just about any command to be placed on any button on the remote. So with the cable and freeware tools, you can control just about any piece of electronic equipment that uses IR.
Depending on your electronic skills, the cable is ~$1 to $20. The latter being the cost of a pre-made cable.
www.hifi-remote.com for more details.
-Jon