Thanks for the xautomation build!

I tried something similar (using mpc to control mpd, no need for xte), except I used dbus-scripts. dbus-scripts is probably the cleaner approach, as that lets one daemon handle multiple event definitions installed separately, but I have trouble with dbus-scripts in session mode. It repeatedly segfaults.
So I found that there is an equivalent signal on the system dbus, and am using that. But Xautomation will be very handy for some other stuff.