All right, that wasn't too hard. I'll implement that same fix into my other audio plugins (except regular Focused Sound Effects) shortly, but just having the fix in one plugin should let you use it in all of them.
Viewing post in Focused Sound Effects PRO for RPG Maker MV and MZ comments
Yeah, voice acting IN PARTICULAR struck me as the most likely use case for this in sound effects, and I have another plugin that's all about voice acting, too. Soundtrack Layering also synergizes nicely with this.
But it's just a handy thing to have in general that just never crossed my mind until you brought it up.