Try these solutions:
If the issue is still present, please do this:
cd "c:\Program Files (x86)\AudioRelay".\runtime\bin\java.exe -cp "app/audiorelay.jar" com.azefsw.audioconnect.desktop.app.MainKt > %USERPROFILE%/desktop/output.log 2>&1It’ll create an output.log file on your Desktop which could show any error not brought up by the app.
Send the file at support@audiorelay.net or create a new topic.
It means that AudioRelay can't use the audio format used by your audio device.
If nothing worked, please create a new topic here mentioning any error message.