This is the graphic interface, working only web the webcomponent is fully supported by the browser.
See also :
Elsewhere, numerous tests will fail. See issue #17 on our github for details.
We also have a surprising bug in Chrome that avoid to use audiotag.currentTime={number} ONLY if the source is hosted on localhost if your local server doesn't support HTTP response 206 (partial content). If you need to local test on Chrome, please use file:/// protocol or a complete web server.