From what I can gather I need Girder (which is no longer free right).
I think Girder 3.29 is still free and downloadable. Google it to find out.
You could use the
XRemote plugin.
If I recall, there is an English document on setting it up but right now it is eluding me.
If you only want to control functions of Xlobby, then you don't need Girder. Just a USB-UIRT. Use the USB-UIRT to learn the different buttons and then tag the codes to events.