To be able to customize one's audio tracks, personalized filenames will often prove to be insufficient.
This is why users will resort to adding metadata info to their audio tracks, including details like album and artist name, genre and ratings or personal comments.
Users have to keep in mind that not all audio formats feature support for metadata, but there are a number of specialized utilities that come with support for a very wide range of formats.
One may also have the option to process several files simultaneously, or to edit each file separately.