TheTawnyFool

Thank you for taking the time to respond. I beleive it can be done with fmpeg -i input.mp3 -af "volume=enable='between(t,5,10)':volume=0[main];sine=d=5:f=800,adelay=5s,pan=stereo|FL=c0|FR=c0[beep];[main][beep]amix=inputs=2, volume=enable='between(t,15,20)':volume=0[main];sine=d=5:f=800,adelay=15s,pan=stereo|FL=c0|FR=c0[beep];[main][beep]amix=inputs=2, volume=enable='between(t,40,50)':volume=0[main];sine=d=10:f=800,adelay=40s,pan=stereo|FL=c0|FR=c0[beep];[main][beep]amix=inputs=2" output.wav FFmpeg sine. I might fork the project...

Awesome, excited to see it! I am not sure about custom .wav also, I just really need the Beeping, so this will be great for my needs. Thank you so...