Stop sound on next frame/page

The website has buttons to navigate on each page. Each page has a sound. I tried the embed and external but when I click on a button to navigate to another page but the sound from the previous page is still there which overlaps on the next page’s sound.

How can I make the music from the current page stop when going to the next page? I want the next page’s sound to play and not have both sounds play at the same time.

I have tried whatever.stop();, SoundMixer, and everything in the Internet for the past 2 days and I still can’t make something very basic as changing music work.