Is there any way to reference multiple objects in a single Album entry, i.e., an MP3 file, a FLAC file and the actual CD ID number?

Also, is it possible to reference the digital objects in a relative path from a root directory (where the catalog resides) rather than an absolute drive mapping?

My object in this is to deliver to a customer a drive loaded with their music ripped into the format(s) of their choice and an OrangeCD catalog of their physical and digital assets. Of course I would encourage them to purchase their license or simply do that and include it as part of the deliverable.