Hi Del

Volume nodes are midi control events number with values.
1-127 and therefore only work on midi tracks and channels

Audio events are not midi but show up on the Time line as part of the sequence of events.

BIAB2021 UltraPlus,AsusN55S1Tbssd, W10/64,Akai EIEpro
Yamaha CVP405,SquireStrat, CoolsoftVMidSynth
Novatation Impulse61 Ctr kbd, Cwalk blab Kontakt