No Audio Output via AUX

[GeilesLuder]

All seems working fine, im connected, the video plays, but there is no audio output from the Aux output of the rapsberry.
I`ve set the Output via raspi-config and via amixer cset numid=3 1, but there seems no output.
Audio from other sources are played perfectly fine, but not from gotubecast

raspberry 4b with 5.4.51-v7l+ kernel, Raspbian/Linux 10

[alex2844]

gotubecast/examples/raspi.sh

Line 8 in dece545

export OMX_OPTS="-o hdmi"

replace to
export OMX_OPTS="-o both"