Need help making 2 audio tracks: 1 forward 1 backwards play current compared times

In the media player function. My videos and sound tracks can’t play in reverse? Even if I reverse? It starts form the beginning skipping to the beginning of the playlist backwards. Without hearing audio sounds. I am better off making 2 audio tracks. 1 forward and 1 backwards. The problem is how do I set duration to exact playback position when their are to audio tacks? Luckily I got the tape media player working but the reverse is ether buggy or the audio \ movie format is wrong? But I really want to use the 2 audios in one. How do I do that? While using the Media play function node called: set rat to -3 and positive 3.