Persistence with AIMP

New to forum. I'm trying to use PortableApps platform across machines with a flash drive, specifically with AIMP. When I load up data onto the common flash drive, it stays while I use a specific computer, BUT when moving to another machine, if the DRIVE LETTER CHANGES all of the associations from that drive are lost. How do I make the apps on PortableApps truly "portable?" THANK YOU, in advance, for your help.