You can configure your audio by going on Tools > Settings and clicking on the Audio tab on the Settings window that appears.
You can set a Windows Playback Device (headphones, speakers, etc.) to output on the final audio mix. This enables you to monitor your final output audio even while streaming or recording.
This is the Windows Playback Device where XSplit Broadcaster will capture from. We recommend leaving this setting to "Default Speakers". You can also set a delay on System Sound as well as boost the audio.
This is the Microphone Device where XSplit Broadcaster will capture from. This is where you can select your streaming microphone, mixers or audio interfaces. Like System Sound, you can also set a delay as well as boost the audio.
Microphone Mono Mix
When you are using a Mono sound device with one audio channel, XSplit might only be receiving the audio on one side. You can use options like Average Left and Right, Copy Left to Right, or Copy Right to Left to tweak your audio input to output on both channels.
Audio Mixing Sample Rate
This allows you to manually select the sampling rate of your final audio output. Useful for those that a specific sampling rate for their recordings or output sources or matching the sampling rate of legacy audio devices that cannot accommodate 48KHz.