title: Check if an mp3 file is playing and stop it
body: <p>So i have an page with multiple mp3-files which right now can all be played at the same time.
  But when I have an player running and start one of the others, the already running should stop playing and then the new one.
  Also I have an infite load, which loads more mp3-files each time I scroll.
  In total I have 800 mp3-files, which might all be loaded if someone scrolls far enought.</p>
  <p>Is there a way to achieve that, besides running through all of them and check if its playing and then stop it, if it does?</p>
  <p>Sidenote: I have jQuery and base JS in use for that</p>
  <p>For <strong>clarification</strong> here are some more details about the problem:</p>
  <p>Its an Wordpress page, where there are listed the latest 5 Podcasts and as soon as I scroll far enought down, another 5 get loaded into the page.<br />
  Those Podcasts are some custom post types, so like 0 own code is written, besides some basic HTML and CSS, which is not noteworthy.<br />
  Since there do exist 800 Podcasts as of now, this is the possible ammount, if someone dares to scroll for ages.<br />
  You can click on the title and image to get into an seperate page, where only the Podcast itselfe is listet with some extra information about it.<br />
  In the podcast category are thus 5-800 Podcasts.</p>