[Mac Client] Why is there no music button for DJ Sona if she is my teammate? (Riot Help?)

I just played an aram with a DJ Sona and sort of forgot that teammates can listen to her music until an ally mentioned it in the chat. A friendly J4 tried to help me find the button, but I didn't see anything. When I finished the game I looked up what it should look like, a musical symbol right next to her picture in the Ally section of the HUD, but it wasn't available on my screen at all. Not in the tab menu, not next to her picture, not even in the sound menu. Why is there no button for mac users?
I want to hear her too! The lack of mac support makes me

(not here to discuss mac vs. windows, no 'haha, join the pc master race' replies please. thanks.)