Audio player in sticky bar

Hi:
I want to use an audio player inside a sticky bar, the idea is that the users of the site can hear the audio (radio streaming) without interruption even if they navigate through the site′s content.
Something like this :
https://themeforest.net/item/soundwave-the-music-vibe-wordpress-theme/full_screen_preview/5011090

I know, you might be thinking “why don′t you use that theme and end your troubles once and for all?”
The thing is I already developed a very nice site and i really don′t want to change the theme..
I′d really appreciate your help.
Thanks.

J.