Itunes Recognize External Aif Files?, See title Options

[eddiejoepopcorn]

I have a collection of AIF files exported to iTunes from Garage Band, but I also want to edit them using ClickRepair or some other noise-reduction software; also, I might want to do my recording directly in a third-party application, and avoid Garage Band altogether. The trouble is, I can't figure out how to get iTunes to recognize any AIF files generated by software other than Garage Band. My Mac experience stopped at system 6, and I don't know anything about file structures, but it seems that the necessary information must be contained in a resource fork, or some similar device. Where can I get detailed information on file structures?