Play video and music > Beat DJ
Insert a filter effect
Rotate the wheel to select a filter effect and then tap <OK>.
Rotate the wheel to adjust the effect level.
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Note
•You can insert up to 2 filters in a music file.
•If you want to adjust the level for the applied filter effects,
return to the music playback screen and tap 
at the centre of the screen. Tap the name of the filter you want and then rotate the wheel.