There are good news about the broadcasting topic.
Last weekend I visited the annual get-together of the Virtual Racing e.V., where I was talking to Martin Bals of
multi-bc. He told me, that they have a good infrastructure supporting large numbers of spectators and that they sublet their servers to different leagues. So it is not for free, but of course it is cheaper than to lease the servers on your own. So if you are really interested in broadcasting a race (or a league), this is a very good opportunity.
The advantage is that you can use dedicated computers for broadcasting with e.g. hardware encoding, thus resulting in an excellent picture quality. Resolution is high (PAL) and with about 800kBit/s you will never notice block artefacts. Afterwards broadcasts are available as downloads, check them to see the picture quality.
Currently they have not yet broadcasted LFS, but he told me that they would just install LFS, so LFS leagues can use their service too. LFS is running on their servers and you will control this broadcasting machine remotely (contact multibc for further technical details).
with kind regards
Soeren Scharf