Beyonwiz DP-H1 - Manual (Page 82)

File Playback Function
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2-2. Music Playback
You can play music the same way you play a movie; please select the
“Music” icon on the top menu to play music. You can utilize the same
trick operation for playing music which is described in the previous
section for playing a movie.
You can play the previous or next file with the PREV or NEXT button.
NOTE
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The DP-H1 plays all music files in a folder repeatedly unless you press
the STOP button.