is there a usb IR sender/receiver that's compatible with macs? i was thinking how cool it would be to control my ir devices with my computer and, ultimately, Sony Ericsson Clicker.
I think what you are looking for is: The Higoto USB-IrDA-adapter adds an IrDA interface via USB to any Macintosh computer without IR port http://www.higoto.com/
This company is in Germany.