Working with 3.0.2a I'm having an issue where the character will periodically "talk" with no audio.
I've tried making new character files and using the default characters.
I've also made sure to test other audio inputs making sure nothing is coming through them when the character animates.
There also might be a connection between the "talking" and mouse movement. it will happen without touching anything every 15-30sec but if i'm moving my mouse around it appears to happen more frequently but its hard to say for certain. This is with and without any sprites set to follow cursor.