That css fix did not work when I tried it, but I was able to fix the demo site by replacing this:
div.jp-audio div.jp-type-playlist div.jp-progress {
left:166px;
width:130px;
}
with this:
div.jp-audio div.jp-type-playlist div.jp-progress {
left:100px;
width:130px;
}
.AudioPlayer div.jp-audio div.jp-type-playlist div.jp-progress {
left:166px;
width:130px;
}
so the top one fixed webstore but it broke the layout in the Audio Player feature,so I needed the bottom one to fix that.