Please stop giving advice if you don't know what it will do. AV Linux has the latest ffado installed and it is a much newer custom package than will be found in the default Debian Squeeze repos so telling someone to just install 'whatever' from synaptic is not the way to go in this case at all, I appreciate anyone's willingness to help, but are you actually using AV Linux? Judging by some of the answers you're giving people I'm guessing you aren't and that's totally cool with me but please don't offer detailed instructions from other OS's to new AV Linux users.
If somethings is already installed, that will obviously be revealed when using synaptic. The user
(not a 'new' one, if you read carefully) switched devices from usb to firewire, so I mentioned ffado,
because he didn't. The only detail I provided, was to search google for
trulan firewire, which provides some good reading on related subjects.
But you've got it covered.