Rather than have a red circle icon for album (load) errors and a no entry icon for track save errors, save use of these icons for fatal issues, and use an exclamation mark overlay for non-fatal errors (to draw attention to the Info dialog).

Also, add message to tooltips when the overlay is used.

A couple of implementation thoughts (which you probably already thought of):

Implementation does not need to use an overlay - we could simply duplicate the icons and add an exclamation mark to one set.

It might be better to use a dict of tuples to associate icons and tooltip text for each error type.