I currently use the standard-client that comes with Debian for amd64, but this, well, no GUID, slow downloads, etcetera. I tried the client from tremulous.net's files-section, but they don't work, etc., so I ask myself if it may be possible that someone here already did that what I am about to do, that is using TJW's mod or something on Debian for amd64, because I really would like to know if this is possible at all.