Ok, now I understand Adobe Audition a bit more and found a solution to listen to the other tracks and record the guitar straight in the computer. The catch: my guitar is going straight in the m-audio.
My Fender Frontman 212R has a Preamp Out that is supposed to be used in recordings as can be seen here
http://723634aa8cde73188d4661bb3fe81ce4.diplodocs.com/external_download5.php. But nothing happens when I put the cable in the preamp out and the other end of the cable in the guitar input of
my firewire solo. The sound still comes from the guitar speakers, nothing in my computer, nada, blank,...I wish I was blank.