Can you watch swiss tv, Mike? SF2 (or sometimes 3sat) do broadcast Bern Jazzfestival concerts. I do not follow it (have no Video, no DVD-recording facility, and no own tv either, only watching at my girlfriend's), but it might be worth it!
I have no idea though if they did broadcast anything from Gamabarini, as the Bern Jazz Festival had to change locations and had a whole new concept last year: the new location is some sort of a club, each artist plays for a whole week, and one of these evenings is recorded by swiss radio, broadcast partially live, and later they broadcast some more, at times the same again, in other cases (as with Gambarini, hence 2 sets around) other material.
ubu