I can't have only the input of my phone playing through my headphones without everything from my mixer coming through my headphones, no matter if I have the monitors as on/auto/off. That's what I want until I plug my phone in to hear the backing track music (spotify) If I turn the monitors off on reaper, the audio still sends through the headphones. The audio still sends through voxengo, although I can't hear the audio through my headphones. Voxengo is put as an FX on the master track. It's far too off putting when I am listening to a backing track and the way I have achieved this before was to mute the master audio. This works fine so far, although I don't want to hear any playback from my drums while I am streaming.

I thought of plugging my phone into the Focusrite mixer and using it as a separate input to then send with all of the drum audio at the same time with voxengo. Any reason why it may initially be great and then it falls off? After 15-30 minutes the desktop audio and my audio from reaper/voxengo falls out of sync. I record some short videos and everything is in sync and when I stream it is for the first 15-30 minutes. I just delay the desktop audio by 285ms and everything syncs up great. I use spotify for the covers that I play.

The audio sends fine, although initially it's a little delayed to my desktop audio, which is where I am playing spotify from. To get the audio from Reaper to OBS I need to use Voxengo and Virtual Audio Cable and have that audio captured separately from my desktop audio.

I can get the levels to where I want and everything sounds good. I plug all my microphones into the Focusrite, run Reaper and everything is great. Here is the gear/software that I use, I will then explain the situation/problem I have: I have a problem where I am streaming drums on twitch.

Obs audio cable