Each license grants you a different period of time to use the music.

“Music Authorization 1 – Personal” – 5 months.
“Music Authorization 2 – Business” – 1 year.
“Music Authorization 3 – Business” – 3 years.
“Music Authorization 4 – Business” and “Music authorization 5 – Unlimited” – no time limit.

Each license is for your use only and you can use it within the authorized time period until you reach the authorized downloads volume and audience size.