Best answer by Mathis
Thanks for reaching out. The fact that Facebook sometimes shows the wrong image is rooted in the fact that they are caching information on their end and sometimes fetches outdated information when you're sharing.
They have created a debugging tool that helps you sort this out from your end though. You can find it here: https://developers.facebook.com/tools/debug/
Paste the link of your track, click "debug", then click "fetch new scrape information". Now when you share your track again, the correct image should show.