I have installed taglib1-dev. But can't figure out how to include it in my project in Qt Creator. And how do I include taglib headers? I have seen explanations for Windows, none for Ubuntu.
I figured it out for myself. You have to apt install libtag1-dev. And then just include the header (.h) files in your qt program. In your .pro file, you have to add LIBS += -ltag and then run qmake.