URL changes for JS?
404 for one of the js files on your website. https://cdn.rawgit.com/gleitz/midi-js-soundfonts/master/FluidR3_GM/acoustic_grand_piano-ogg.js
Valid url? https://raw.githubusercontent.com/gleitz/midi-js-soundfonts/gh-pages/FluidR3_GM/acoustic_grand_piano-ogg.js
Hi @wildfiremedia
¿where do you find that link? That's outdated, for sure. The new URLS are using github.io directly. For example: http://gleitz.github.io/midi-js-soundfonts/MusyngKite/marimba-mp3.js
It's from your demo and the error is produce in the Chrome console.
As screenshot:

where do you find that link?
The demo here: https://danigb.github.io/soundfont-player/ The gh-pages branch uses a stale version of the soundfont-player library.