Think I can add something to this thread:
I use one of the CU AirLink devices that I built myself, and I have to say its quite a good little toy :-). Using the IfraRexx software I created a rexx script to work with most of the mp3 players I use, so I can set my amiga off playing mp3's (Ideally using AmigaAMP, with NeonBars plugin), throw myself on my bed and using one of those multiremotes control the mp3 player with it. I have it setup to control prety much everything on the mp3 player and its great. On mine I dont even have to aim it at the reciever, bouncing off the walls works too :-).
I also use my AirLink to control my TV, I have a little GUI I run on the workbecnch with buttons, and with the click of a button my TV channel changes on my 15" TV, or the volume changes etc... This works, but my AirLink is weak at transmitting so the AirLink is placed right in front of the TV's IR reciever. Im not sure if that was a design fault or a #### up on my behalf... Anyway, it works and its a cool little toy, esspecially if your a bit of a kid at hart and a g33k :-D