I'd love to know before buying, but your plugin looks really cool, I'm looking for something like this.
I use both this plugin and a smattering of Yanfly plugins in my own game project. While I have not thoroughly tested every single individual Yanfly plugin with mine, there are no incompatibilities I'm aware of.
And if any are reported, I'd try to fix them if possible. But I don't believe any of Yanfly's plugins (that I'm aware of) should interfere with this one.
EDIT: I looked up Yanfly's list to see if there were any plugins I was unaware of. The plugin most likely to cause an incompatibility issue is Music Menu - I don't use that and both involve playing BGM files. But possibility of a similarly-named function aside, the most likely issue would be not unlocking music for his menu automatically, and that can be done manually. I can check later if you want to know.
There does appear to be an unexpected incompatibility with Music Menu - in addition to the one I expected (playing a track through my plugin does not add it to the Music Menu), it seems like trying to play a track presently loaded via LoadBGM through the menu does not work (no errors, just nothing is played.)
I can't imagine why there would be an incompatibility with any other Yanfly plugin, and that one might be fixable.
EDIT: And now it's compatible with Music Menu. (You should put this below that in your plugin list.) If you have any issues, let me know!