Can we upload music assets to FAB and add a UEFN refence license?

Hi y’all,
I’m interested in uploading music loops and attached music cues, and then explicitly making them available both for sale but more specifically with a UEFN reference license, so that Fortnite island creators can use them for props and background tracks in-game. I looked on FAB today and saw the only “Audio” assets are directly from Epic Games, and they are sound effects, not music. Is there some restriction on adding music to FAB and then allowing a UEFN reference license, or is this just a case where no one’s yet checked the box for that license type after their assets got migrated over?

Thanks in advance for any guidance.