How to change the music in my store?

I would like to change the music in my store to classical music instead of the corporate slogans that i feel are brainwashing me when i am at work so i have to set it back once my shift is over. Would a universal remote work to change the output frequency of the receiver? I know the receiver is located in our store. However, it is out of human reach. This is the root of the problem.





Please any insight into my problem would really be helpful. Signal theory may be included in your explanation for extra points : - )





Sincerely,





PhysicsDisciple