When users share tracks on Facebook and other sites that pull and post an image for links posted, the avatar of the person who posted the file is what is displayed with the link. I would prefer a default image (of my choice) always appear anytime a track is posted. It would also be acceptable to display this default image (without linking the image to the submitter's profile) on my site with each track instead of the avatar of the submitter.

Can anyone provide the file and code that needs to be modified to do this?

Thank you.