This instruction manual introduces the use of the HT-ST9 Wireless Home Audio System, including how to listen to and watch the sound from the TV, Blu-ray Disc™ player, cable/satellite TV box, etc., how to play music/photos from the USB device, how to listen to music played by BLUETOOTH device, how to play music/photos from other devices through network function, how to adjust the sound, how to use DSEE HX function, how to listen to music played by BLUETOOTH device, how to listen to the sound received on a receiver compatible with BLUETOOTH, how to connect to a wired network, how to connect to a wireless network, how to play music/photos files in the home network, how to display the screen of a mobile device on the TV (screen mirroring), and how to watch copyright-protected videos.