When playing back digital media files from a connected USB HDD you will be able to save a file to the favourite section found on the home page.
To save a digital media file to favourites press the Options button on the remote during either playback of a file or when the file is highlighted. This will open an additional menu whereby you will be able to add the file to your favourites.
Please Note: You will only be able to play this file back from favourites when the USB HDD is connected to the system.