Thank you for looking into this more and sharing what you found out.
Really disappointing response from Oculus. At a minimum, the lack of
shareability of music packs with accounts on the same headset should be
made crystal clear (not buried somewhere...
I found my way here because I'm having the exact same issue. My husband
and I have been going into our settings thinking we're doing something
wrong, but looks like this is an issue with the game itself. No alert
about this when I purchased the song ...