I’m not currently an AJ seller, so I’m discussing how it works in general, not specifically for performance royalty free sites like AJ:
You won’t pay anything because you aren’t the “broadcaster”, YouTube is. In fact, you are no longer part of the equation relating to our income when it comes to these royalties. All of this is totally separate from your license purchased here. YouTube is the “venue” performing the music and they pay a blanket fee to the PRO’s for the right to perform music that is registered with them. So, YouTube pays BMI a blanket fee to cover all their music use, which is very high, then BMI pays me based on the number of performances YouTube presented for videos with my music. You pay nothing.
Since AJ music is not registered with a PRO, even if a musician belongs to a PRO, there is no way they can get paid performance royalties on those songs despite the fact that YouTube has already paid their performing rights organizations and the money is just sitting in a pool waiting to be collected. Musicians here are simply not getting money they’re entitled to earn because they waived their rights to it on AJ’s behalf, basically for marketing purposes since a very high percentage of their customers would never be responsible for performance royalties. But, YouTube still paid the money. Doesn’t sound fair, does it?