The following events can be used to access properties of mixer tracks.
REC_Plug_Mute
module-attribute
REC_Plug_Mute = REC_Plug_General_First
Whether the FX plugin is muted
REC_Plug_MixLevel
module-attribute
REC_Plug_MixLevel = REC_Plug_General_First + 1
Mix level of the FX plugin