Hi John,
Those are different things:
> how do I 'autodetect muxes'?
Enable autodetect muxes, and maybe restart tvheadend should make tvheadend search for all muxes.
> I added 10 channels manually on the Configuration - Channels/EPG - Channels tab, although only about 4 or 5 are watchable, and I just typed in a random name and number.
I think you can also select the "service name" by clicking on it; the line becomes lightblue. Then you can clcik " map services" and the service name will become the channel name.
If you then also map all selected channels, and restart tvheadend, the channels should appear under "configuration, channel"
>I don't know what to put under 'EPG Grab Source'.
You can either use the OTA-epg, but there are per country also various other sources. Advantage is that those sources usually have more info , for an longer period ahead, and contain channel icons.
Those can be set under the " internal grabbers". They are python sripts that gather the info from webservices.
See
http://wiki.xmltv.org/
You can find them for various countries, search for tv_grab ( in my case tv_grab_nl).
Hope this helps,
Alex.
