Audio player (software) with familiarization mode / automatic rewind?

Question

css

Good afternoon.
I'm looking for an audio player (software) with the ability to get acquainted with the tracks.
For example: play a song for 30 seconds, fast forward 1 minute, play the next 30 seconds, etc. and so we move on to the next song in the same mode.
Purpose: to listen to a large number of songs (to get acquainted, find the best tracks), without going to the computer, so as not to rewind with your hands like this, but along the way to do some other business.
It is highly desirable that there be a version for both Windows and Linux, because. I use both of these systems.

Answer 1

This is done with Js. I wrote an example in jquery.

window.onscroll = function() {
    var scroll = $(document).scrollTop();
    if (scroll >= $(document).height() - $(window).height()){
        $('.sidebar').addClass('sidebar--bottom');
    }else{
        $('.sidebar').removeClass('sidebar--bottom');
    }
}

You're already tweaking the styles.

.sidebar--bottom {
  top: auto;
  bottom: 500px;
}

More or less like this.