From what I saw, the audit program was for people 1. with alumni connections or 2. money. It's similar to the program that they used to have (I don't know if they still do) at Hahnemann, where you do the work, pay for it, but don't get credit. It's to see if you can hack it. I know one woman who couldn't. There were these two guys that were just annoying as HELL, constantly quoting the Simpsons (but not a wide range - just a few of the same, tired ones, over and over), who were "graduates"; however, their team was busted up when one half failed genetics 3 times (even though 2 failures for poor people means the door) when he was in the actual medical program.
If you get offered the audit vs. nothing, take it. If you get to go into medicine, take that, even if they make you do the alternate program.