Playing selected audio fragments synchronously on the web interface.

[suportelo]

I'd like to be able to simultaneously play audio fragments that the web interface contain —that is, "reference," "source," and N generated fragments. For this, there should be a checkbox for each audio fragment available in the current mode tab and a "play/stop" button & "volume" gauge. I often have to mix existing and newly generated audio fragments, which requires constantly switching to an external application. The names of loaded fragments should also be displayed near their sections.