'not sure about the Tau but in the "drummer controls" there should be a key "clicker on off". It is separate from and in addition to the drummer voices (loops).
You might be interested in a hint by Geert as well:
"There's a way to play the first layer of a loop actually, with some tricks. I did it before with the Pico. Since EigenD sends out MIDI clock sync, you can send out a click on a separate channel just to your headphones, start the scheduler without any drum channels, record, and only then turn on the drums."
The full discussion is here:
http://www.eigenlabs.com/forum/threads/id/481/?page=1#snap_post3453
Welcome to the growing crowd of players
m