> the big trance / electronic / etc internet-radio group-of-stations website
DI.FM?
They're still up, although I don't know how up-to-date their rotation is. I stopped listening to their "stations" when they stopped being a radio, and became a sort of an on-demand streaming service, where every user is fed a different random playlist, and what one hears when tuning into a station is not what everyone else is hearing. They admittedly switched their business in order to pay less taxes, but it completely destroyed the feeling of social connection with other listeners for me. On top of that, closing the lively forums, which provided a comment section for all tracks and shows played on the stations, sure did not help. In retrospect, freeloading those 96kbps mp3 / 64kbps wma / 48kbps aac streams was a good experience; today it's not the same anymore.
(Big off topic, but I don't care much. Those not interested probably collapsed this comment section at its root and are not reading this anyway.)