Help: Issues with SCM Music Player

Hello, I've been having some issues getting the SCM music player to work on these webpages:
https://saltrocksss.neocities.org/sketchbook1
https://saltrocksss.neocities.org/sketchbook2
The player is showing up at the top, and you can flip through the songs, but it won't actually play the music. At first I thought it was an issue with my computer or browser, but my boyfriend tried it on his computer and it wasn't working for him either. This is the code I've copied directly from the SCM player site, and pasted right under the <body> tag of my HTML:

Code

<!-- SCM Music Player https://www.scmplayer.net -->

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<script type="text/javascript" src="https://www.scmplayer.net/script.js"

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data-config="{'skin':'skins/aquaBlue/skin.css','volume':50,'autoplay':true,'shuffle':false,'repeat':1,'placement':'top','showplaylist':false,'playlist':[{'title':'Clarity - Zedd ft. Foxes','url':'
 In My Car - Paramore','url':'
 Attack - Grouplove','url':'
 My Breath - Kelly Clarkson','url':'
 - Britt Nicole','url':'
 ></script>

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<!-- SCM Music Player script end -->

All the songs are YouTube URLs, if that makes any difference. Any help or suggestions would be greatly appreciated! Thanks!

-- Lyn