Biggest timesaver in the world for someone who listens to as much music as I do and doesn't want to deal with manually transcoding FLAC files.

iTunes and Apple Music will soon support FLAC natively, though -- previously it was out of necessity, space, and not wanting to use VLC and lose my main/single use of my Apple Watch. It's still about the latter two.

I recently also set it to output a manifest that I can feed into rsync on my work computer to pull my library from my backup server.