AlumoAudio saidi don't think this bring some valuable results, from audioswap feature., this have no adequate searching mechanism, no tags,I think the reason however why they prefer no watermarks is because AdRev registered music is added to the YouTube AudioSwap catalogue, where YT users can swap out their stolen Taylor Swift songs on their videos for ours (and we get the revenue).
How someone find our track's, among of millions other tracks in audioswap without tags, and descr?
furthermore, audioswap not provide separate download tracks for user, like "YT audiolibrary",
Users can't apply reasonable montage, so, very low probability for case when someone from that users can achieve million views on behalf of our :)