Assumes the working directory is in the format:
Artist 1 >
[YYYY] Album 1 >
artwork >
scan 01.png
scan 02.png
01 Track 1.flac
02 Track 2.flac
folder.jpg
[YYYY] Album 2 >
artwork >
scan 01.png
scan 02.png
01 Track 1.flac
02 Track 2.flac
folder.jpg
Artist 2 >
...