How do I play audio from a Windows PC to my Kawai piano via Bluetooth Audio?
Pair the piano in Windows Bluetooth settings, then select it as the default playback device.
Enable Bluetooth Audio on your piano. In Windows Settings > Bluetooth & devices, pair your piano. Once paired, go to Settings > System > Sound and select your Kawai piano as the default playback device.
Open any audio application and audio will stream wirelessly to your piano's speakers. Adjust volume using Windows volume controls or the application settings.