Connect Samsung S7 to separate speakers?

I have a cd player/radio that has an "audio in". Is there a way I can connect my S7 to that cd player thru it's "audio in" so I can play music thru its speakers instead of the phone's speakers? If there is a way, what connection would I need? The cd player is not blue tooth enabled.

Forgive me...

Connect Samsung S7 to separate speakers?