Thank you for your feedback! I really appreciate it!
Add your link to Spotify profile to in field called “RSS Feed”. You will find it along other social link options. Now when it is done you will see RSS icon but since you don’t use it, we can simply replace it with Spotify icon via CSS.
You can get this done by adding this code to Theme Options - Other - Custom CSS.
One more question. I had the heart icon like separation between posts, and I would like to change it for another icon, like globe (gliphycon) it’s possible?