Please follow the steps below to configure the onboard audio of MD200. Then you can get sound out from the HDMI port when connecting MD200 with HDTV.
1. Install OS & required drivers correctly on MD200.
2. Access "Control Panel" --> "Sounds and Audio Devices" --> "Audio" to set “Default Device” of "Sound Playback" to "HDMI Device".
3. Execute "Media Player" to play back music. You can hear the sound output from HDTV through HDMI port.
Note: if you have run "Media Player" to play back music before you configure the “Default Device” of "Sounds and Audio Devices", you must exit from "Media Player" & rerun it to pick up the settings you just modified for HDMI port.