Trying to consolidate mp3 files onto my external HD but hit a brick wall
At some point, my iMac started saving mp3s added to Apple Music on my internal HD, instead of on my external HD, so now I have a ton of mp3s on each HD. These two locations have folders with the same artists, but different albums. When I try to add all the internal HD mp3 folders to my external HD mp3 folders, my iMac asks if I want to replace or skip. I want to consolidate but can't figure out how to do this. Taking one artist as an example (I have hundreds), say I have a Frank Zappa folder on my internal HD with one album in it, "Joe's Garage." Then, on my external HD, there is also a Frank Zappa folder, but this one has two albums it, "Apostrophe" and "The Grand Wazoo." How can I end up (in this simplified example of having only one artist to consolidate) with one Frank Zappa folder on my external HD with all three albums in it?
iMac 24″, macOS 15.3