This, I think, is the thing to do (yes, I'm aware this'd take some time and money):
1.) Eliminate the on-vehicle cameras. I too have my doubts that the ride videos sell well anyway.
2.) Partner with a music streaming service (Spotify, TIDAL, Apple Music, et al.) and make that service's database available to riders through the UO app.
3.) Allow riders to pick, from that selection, one song to ride with, with each song being given its own unique 3-digit number.
4.) On the touchpad, a rider will enter their number, akin to how you punch in for a secret song now. If all goes as planned, the system will match the number to the song and play a segment from it during the ride like normal.