Allow customization of forward/backward jump buttons
The feature is to enable the user to customize the amount of scrolling time (in seconds) for the forward and rewind commands via the settings options.
The ideal embodiment for such feature occurs when the user is watching a movie in a foreign language with subtitles. It would be desirable to rewind the track just the last sentence (usually 3-5 seconds) instead of having a standard scrolling time the usually put the mark back too much.