tvheadend installed - now what?

[Torfinn Ingolfsen]

So I got tvheadend installed (see this thread[1] for the gory details).
And I have a usb-based DVB-C adapter[2] that works with webcamd, at least good enough that it w_scan is getting the
DVB-C channels from it.
I have selected and enabled the device in tvheadend's web interface, I also tried "add DVB network by location", but
the only one that shows up for Norway is a DVB-T one, and I can't use that one (I tried anyway, but it didn't work).
It doesn't look like tvheadend autodetects muxes and / or does an initial scan.

So do I have to add muxes manually? Or should I do something else?

Details of FreeBSD and ports:
root at kg-f4# uname -a
FreeBSD kg-f4.kg4.no 9.2-STABLE FreeBSD 9.2-STABLE #3 r261516: Wed Feb  5 22:38:36 CET 2014     root at kg-f4.kg4.no:/usr/obj/usr/src/sys/GENERIC  amd64
root at kg-f4# pv webcamd
webcamd-3.11.0.2            =  up-to-date with port 
root at kg-f4# pv tvheadend
tvheadend-3.4.0.20130726.3_5  =  up-to-date with port 


References:
1) http://lists.freebsd.org/pipermail/freebsd-ports/2014-February/089771.html
2) http://sites.google.com/site/tingox/pctv_nanostick_t2_freebsd
-- 
Torfinn Ingolfsen <torfinn.ingolfsen at getmail.no>