Add the code below to the Custom CSS field on the Style tab of your Audio Player widget’s settings:
[class^='ProgressBar__Component'],
[class^='Full__Controls']{
margin-top: 4px;
}
[class^='Full__InfoContainer'] {
padding-bottom: 4px;
}
[class^='PlaylistItem__PlaylistItemComponent'] {
height: 36px;
margin-bottom: 0;
}