You can use some mobile phones as a universal IR and Bluetooth remote. Apart from that I know of nothing else. You'd also need to switch between 4 different pieces of software for 4 different units so it's far from practical.
Perhaps when they start linking devices wirelessly they'll build such features into universal remotes.
Sorry for repeat posting, but I think you would be better off looking for an IR adapter for the PS3? I haven't had a look for one yet but I'm sure someone will have produced/be on their way to producing one.