Machine has duplicate iTunes libraries?

[PruneTracy]

I haven't run disk inventory x in ages, and just ran across the fact that my machine has TWO iTunes libraries, taking up beaucoup space.

Same with a folder called: com.apple.iLifeMediaBrowser.ILPhotosTranscodeCache

This is almost 14gb of old pictures that are also in my Photos app library. the path of this is: library/containers/com.apple.garageband10/data/library/cache/com.apple.iLifeMediaBrowser.ILPhotosTranscodeCache - is this really 10 year old garageband accessing and copying 14gb of photos??

Either way, if I can safely delete 58gb of superfluous/duplicated material, I'd be a VERY happy man.

Thank you!!