The Linux Infrared Remote Control system has been around for a long time, and as of recently, there is a windows port! however, I've found that WinLIRC clients can connect over a network to an actual LIRC server just fine.
Basically, I have a remote control that I use with LIRC, and it would be nice to use it to control RMX without needing a dedicated plugin specifically for my remote, especially as I can't get the remote and it's usb dongle to work in windows...
http://winlirc.sourceforge.net/ has the a plug-in to control Winamp in c++ with source along with WinLIRC itself...