I'm bumping this topic as I've encountered the same problem. I'm prototyping a sort of show control system (which is scratching the surface of describing this project), and want to have discrete control over mixing and spatialization of audio from multiple video assets. [spigot~] does have an input named "Message in" but nowhere in the docs or the forum can I find how to address that message.
my goal is to use instance reporting from [thispoly~] to generate names for [spigot~] and associated video output, but [spigot~] naming is really hanging me up here. I'd like to be able to name the [spigot~]s as I'd name buffers~ etc...any help here forum/c74?