Syncing the same folders after manually copying them takes forever

Hi Ollie J., thanks for taking the time to message us!

Currently, there isn't a faster method to do what you're asking. As your music library is rather large, this would mean that there are a lot of files and folders that need to be indexed by the Dropbox desktop application.

This will take extremely low bandwidth when compared to downloading files from scratch, so you took the best step to get your files across to your new machine.

I'd advise being patient with the app, and perhaps leaving your machine on overnight if need be to see if this helps.

Let me know if you need any more assistance in the future!