I'm sure Audition 4.0 will be great. I just wish the program wasn't such a RAM hog, or so it seems. I have a decent PC, but Audition 3.0 seemed to bog it down mercilessly. I keep ending up back at Audition 1.0 or 1.5, which seems to run alot better on my machine. That said, I'm sure processing digtial audio is a pretty intense process that's facilitated by an uber fast machine.