iPod touch AMAZING DISCOVERY! Add Apps to your Touch without WIFI!

I downloaded and Purchased iPhone Drive the other day.... and it doesn't give you access to your Applications or any files on your iPod drive but, I did notice that if you copy over the file called "disk" to your hard drive and rename it to "disk.dmg" you can access all the files on your iPod, modify them, then copy it back to the iPod without the .dmg extension. Did anyone else know they could do this?

Edit: Apparently it doesn't work. I deleted an App and copied the "disk" file back and all my Apps were still on the iPod after reboot. Drats. Does this mean I can just delete "disk" and save some drive space?

Here's iPhone drive: http://www.ecamm.com/mac/iphonedrive/

Apparently that "disk" file does nothing at all because I deleted it and rebooted and my iPod is still working fine. It's a 300MB file but, after I deleted it, nothing changed... I still have the same amount of space left on my iPod so I think it was a symbolic link to my disk and not actually my disk. So I guess now that I deleted it, I no longer have access to my disk from iPhone Drive. Damnit. How do I get it back?