Excellent or useless?? – Total files pro Review

Hey, guys, this is an amazing update. I even deleted two apps, just to keep this one, But it lacks of something very important, it lacks the ability to go backwards and forward 10 or 15 seconds when playing files. Because of this problem, Every time that peoples press backward and forward button in the lock screen, it jump from one file to another. So, please fix this problem, and make the option of going back or forward 10 or 15 seconds when it plays a files.
Review by Paul-265 on Total files pro.