I have some old audio cassette tapes of my grandparents talking about their lives. I want to digitize them, organize them and put them online so that all of my relatives can listen/download them. The copying them part is easy. I have digitized them and have one audio file for each cassette. I am at a bit of a loss as to where to go from there. For example, what kind of Audition project would best suit my needs, and lots of other questions, most of which I don't even know I have yet.
Digitising them is probably all you need to do.
It is not clear what your end game is but know that nothing is like what those crime shows make out.
A lot can be done but magic is not one of them 😉