My Main audio library are Apple lossless ALAC files. A 2nd library is comprised of an AAC re-formated copy of the Main, but only songs rated 4-5 stars. I did this because it seemed faster to stream (DLNA) from the AAC library, where Lossless is incompatible with external players, and to make USB Stick copies to play elsewhere. As I'm mostly only interested in the 4-5 rated songs when playing, copying to USB and exporting to iTunes. Also, the AAC copies are in a different parent folder but on the same drive.
Recently I went through an exercise of updating the Genre tag of all Audio files. It was extra work having to tag 2 copies of a song that were in different libraries. So, I wondered should I really be managing the copies together in one Library as a Stack. I suppose Stacked audio files can be stored in different locations as well.
Under this scenario would it be easier to Stack? Or is there another way to manage multiple copies of songs like this?