NES etim NES RGB Board Stereo Audio

[Jackhead]

Quick question. Rebuild a PAL FRA NES converted to NTSC, also with a etim NES RGB board. I want to use the exist RGB plug on the france NES to connect a packapunch RGB cable.
The packapunch has on pin 1 and 2 Audio L/R. Can i connect this pins on the RGB board Audio A/B? Because the diagram say that audio connector (the 3,5 jack) is on O Audio out.

 

[Jackhead]

By the way what i did on the FRA frontloader was replace xtal CPU/PPU from a famicom donor system, a complete recapp with panasonic and rewire the pins from the RGB plug. So i dont need to drill the case at all and have the best RGB output with Stereo Audio on scart and 60Hz region free system .