Icons in the tool bar shown on the above interface have functions shown below:
Progress bar: it is used to view video playing progress. Dragging it can fast
reverse / forward the video.
Touch to play the previous / next song.
Long press to fast reverse / forward the current.
Pause / play: touch to pause / resume the normal play.
Touch to popup the music list
Touch to set sound effect to Normal, Rock, Popular, Classical, Heavy bass,
Jazz and My effect.