Replace default Album Art in Audios section

What's the easiest way to replace the default image for the "album art" of uploaded Audios? (pic attached)

I discovered the file location at http://mysite.com/media/com_easysocial/images/defaults/audios/cover.jpg. I realize I can change this image at this location, but I assume it will get overwritten on each update. What would be the proper way to override this?

Thanks
jv