That's the only keyset available in the LIRC config files, but I've found one more in the hifi-remotes website. I'll try to decipher that one. (For some reason, that one looks like it has more than two dozen codes; do you know how many buttons there are/were on your A/C's original remote?) I think yes, on both machines. I know for certain that LIRC folks are using MCE receivers with the LIRC server; that is, in fact, the main purpose of LIRC to begin with, to allow you to interact with a PC with an infrared remote control. I've gotta admit, though, that I don't know enough about it. I've really only played with IR on the N900. (I really need to start doing this myself, I've still got a few remotes lying around the house here that I'd like to get keysets for...)