The problem isn't a distribution issue, the problem is that he wants to be able to tell other people that they're allowed to use his music for free, then turn around and tell YouTube that they need to redirect all the ad revenue from videos using it into his pockets as payment for using it, adding ads if necessary. That's a sleazy, dishonest thing to do. (Even for CC-BY-NC as you're adding ads to non-monetized videos against the creator's wishes - and possibly in violation of the license of other elements of the video.) Also, what matters to the distributors is whether any of the music was ever released under Creative Commons. Releasing a slightly different version probably won't help either for this reason.