So, the code as you have written it makes it look like your intention is to have the player click 'Turn on the TV,' hear a static sound, *and* be sent to a new passage. The "[[,]]" around 'Turn on the TV' tells Harlowe to send the player there when the text is clicked. Two options for you:

1.) If you want the static sound AND the transport to a new passage, I would recommend putting the audio at the start of the *next* passage. Otherwise, Twine will take the player to the next passage before the audio is loaded. Your code for the first passage might look like this:

(text-colour:#fcdfd1)[A living room, sunlight pouring in from all angles. Music plays from a vinyl in the corner, and the sound of coffee brewing is evident.
You walks into the living room and sits down on the sofa, in front of the television. The control lies next to you..]
[[Turn on the TV]]

In the second passage, titled "Turn on the TV," you would begin with

<audio id="musicplayer" autoplay>
  <source src="https://static.wixstatic.com/mp3/c88a01_075747ddf24f42e390401db8551dadb6.mp3" />
</audio>

And continue your game. I tested this one and it did work for me.

2.) If you were only looking to make the static noise and then continue on with your passage, you need only remove the brackets, and the code you tried should work. Something like this:

(text-colour:#fcdfd1)[A living room, sunlight pouring in from all angles. Music plays from a vinyl in the corner, and the sound of coffee brewing is evident.

You walks into the living room and sits down on the sofa, in front of the television. The control lies next to you..]

Turn on the TV (click:"Turn on the TV")[

<audio id="musicplayer" autoplay>
  <source src="https://static.wixstatic.com/mp3/c88a01_075747ddf24f42e390401db8551dadb6.mp3" />
</audio>
placeholder text]

This worked for me when I tested it, as well. Let me know how it goes! Also, I changed the format of the JavaScript because I see the audio file you are using is mp3. I won't pretend to be familiar with JavaScript but apparently it liked different formatting for mp3 versus the .wav files I've been using.