PRO Tracks means that the music composer and/or publisher is a member of a Performance Rights Organization (PRO). These tracks are royalty-free for
nearly all types of use without the need for any further licensing but, in
some circumstances, these tracks may require additional licensing from the PRO in your country. Examples of this would be to use the music at a trade show in Germany or to play the music in a shop in some countries (not all countries). TV/Radio broadcasting requires that you file a cue-sheet when this music is broadcast, but this does not cause any additional costs or additional licensing required, as the broadcaster already has a PRO license. That includes YouTube who already has a PRO license, so you don’t have to do anything other than to include music credits in the Description of your YouTube video.
Most “royalty free music” websites don’t even tell you when a composer/publisher is a PRO member, because it’s only in exceptional circumstances that such membership actually causes additional licensing requirements. To read more about this, please see our page General Royalty-Free vs Completely Royalty-Free.
Non-PRO Tracks means that the composer/publisher is not a member of any kind of Performance Rights Organization. This music is completely royalty-free for all uses covered by our license.