That's a really good point! It came about this way because I have the ad-free YouTube subscription myself, forgetting about the many people who don't have it,

That's a really good point! It came about this way because I have the ad-free YouTube subscription myself, forgetting about the many people who don't have it, and would be plagued by ads like you say. I'll be looking for a way to allow listening to the intervals right on the page soon, thank you!