Hi, 

Unfortunately, as much as I would love to help you, this feature is not possible with Sonaar at the moment.

On my end, I tagged this ticket as a feature request so that our development team can consider this option for a future update.

a very quick workaround solution which we DONT officially support  (I have not tested it, and we wont be able to help you if you have other issues that are being provoked by this solution because this is a custom solution), is to add this to your custom CSS:

@media only screen and (max-width: 860px){
    #sonaar-player .player .wavesurfer {
        display: flex!important;
        z-index:99;
    }
    .time.timing_totalTime {
        display: none;
    }
}