Not a bug but an error. A licence file for a font is in the ..\sound\music folder, rather than the assets folder with the fonts.
Suggestion: As the music files are converted tracker modules, how about adding tracker support for additional music, so they don't have to take extra space. If the original music files are available in tracker format, they could replace the OGG files.
(not sure if that would be an up, down or sidegrade, but it would be suitably concise and nerdy).
LibXMP or OpenModPlug could provide suitable support with a low overhead.