Packaging Mac OSX Dynamic Library (FMOD)

I know that in order for my simple program to access the FMOD dynamic library, I need to copy the library into the debug package. I can't really understand how the "custom process step" works in QT Creator, I figure that's where I can make a script to copy the library into the package. So the question is, how the heck am I supposed to use dynamic libraries on osx with QT? I searched all over Google and tapped almost every thread, still isn't making sense to me.