Mach Speed Technologies TRIO V2400 - Manual (Page 14)

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File Navigation
File navigation allows you access and play that file you have a
need for without having to first enter a specific play mode. use the
[NEXT] or [PREV] buttons to highlight an item you would like to
access, and press the [PLAY] button to access it. Audio files will
play in the music mode, video files in the video mode, etc.
Setting
Your system setting controls the look and controls of your player.

Effect Setting- Allows you select one of three menu
change styles