This Sound SoundObject is meant to control a DAW, Reaper in this case by the OSC protocol. The DAW can run either on the localhost or on a second computer.
I use Reaper for this purpose as it is well designed for use with OSC.
The commands can be found in the Configuration file of Reaper/OSC.

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version 2.1, November 2021
- added volume faders & Mute and Solo per channel
- rewind and forward option, MasterVolume

version 2.0, november 2021
- using latest OSCsend opcode