Sonic has submitted the following:
Since becoming addicted to ET a short while ago I've been busy working on custom audio for new maps like Venice, Transmitter and Nachteinbruch (formerly known as Flak Canon). Most of these maps should all be released within a few weeks.
I now have a website at http://www.sonicvalley.com/games
where I'm putting all my sound packs, news and links. Check it out and let me know if your map needs audio.