You just can't play audio from both apps at the same time but you can certainly alternate between which app is active. You can also select in the preferences inside of Reaper, 'Close Audio Device' when Reaper is not the active application, thus when you select another app to play from, then Reaper will close the ports of the ASIO driver for the sound card as long as Reaper is not the active application. Chose which works best for you in the Reaper Sound Card settings. ASIO is more of a professionally used driver, but it is limited to 1 app at a time accessing the sound card. Microsoft Sound Mapper is commonly selected by default in other apps because it is most compatible when audio is played from multiple apps, but also provides the worst audio latency problems with the specific app that is using it. Something like WDM, WAVE and Microsoft Sound Mapper drivers don't have this same problem of sharing audio between apps and is likely what the other apps have selected by default. If you want a quick fix, then go into the audio device options inside of Reaper and select a different sound card driver for the UMC-404HD. This popular driver has been downloaded 84,029 times and is rated 4.5 out of 5 stars. Older operating systems like Windows 8 are also supported. Our archive contains recent Windows 11 and Windows 10 drivers that match this device. Which driver are these 'other apps' which don't have this problem using? Download the latest version of the Behringer UMC404HD 192k driver for your computer's operating system.

Thanks.This is a very common problem with using ASIO drivers, which Reaper will select by default since it provides the best latency performance. Not sure if I'm making any sense or thinking about this correctly but any help would be appreciated. if there was no sound board at the event, would I just use the Main Output on the Behringer instead of the Playback Output? My sense is that I would select a vMix Audio Bus as an audio output and assign it to one of the ASIO channels for the Behringer interface is that correct? And if yes, does it matter which one? And then on the Behringer, would I use one of the Playback Outputs (not Main Outputs?) and if yes, how do I determine which Playback Output ports to ensure only the mix-minus audio is going out of that unit to the sound board or in-room speakers?Īnd finally, if I wanted to also share the audio from the event mics (in addition to the vMix audio) directly to the in-room speakers at the event, e.g.

I've set it up and tested it and it works fine that way.īut I'm unclear on what steps I would take to send mix-minus audio from vMix to the Behringer and then send that mix-minus audio from the Behringer to either a sound board or in-room speakers at an event (so that, for example, I could share with the in-person attendees at an event the selected audio from vMix Call participants, pre-recorded videos, and other elements inside vMix, while excluding the sources of the microphones or audio coming from the event's sound board to the in-room speakers at the event). I have a Behringer 404 UMCHD audio interface that I'm going to be using to bring into vMix external audio sources via ASIO drivers. I've searched the forums and Google but haven't found this.

Behringer 404 driver