I forgot to take into account you might not be familiar with the different types of licenses, but yes, there are 5 licenses depending on the use and scope of the project.
As for AdRev, I do have some experience with them. I signed up a bit over 2 years ago.
First you have to know that if you use Youtube as a promotional tool for your AJ tracks, they will be pirated. You can have tracks that have sold only a couple times that end up in thousands of Youtube videos. Even more so if you mention your music is royalty-free. To Youtubers “royalty-free” means “free”. There is unfortunately very little you can do about it.
There is one thing you can do though and it’s registering with ContentID. It’s the only protection tool that’s available to us authors. Basically when ContentID matches a video soundtrack to a registered track, it will generate a copyright claim and ads will play on the video. A cut of the revenue generated will be forwarded to you.
Using ContentID will allow you to earn on the illegal uses, but it’ll also have repercussion on your customers. As they too will receive the copyright claim. This used to be an issue as some buyers thought they were getting conned, thought their channels were being threatened with strikes, others were exposed to their own clients as over charging them for music,… This issue is not as problematic nowadays, as Envato has provided more information on what ContentID is and how to resolve claims quickly.
Now it’s all good on paper, and I couldn’t imagine having my music out there without the protection ContentID and AdRev provide. However, there has been some change in the way AdRev has to handle royalty-free music that has been imposed by Youtube, about a year ago. Although AdRev has been unable or unwilling to provide a clear explanation of what that specific process now is. This results on a drastic decrease of detections and thus revenue. So clearly a lot of videos slip through. So sad that a tool that was working so good, doesn’t deliver as it used to.
So that’s my take on it.
There are also conflicting information coming from the AJ forums, about AdRev not accepting new royalty-free authors. Don’t know if this is confirmed.