Change soundfont for score playback on website

Hi,

I'm looking for a way to playback the music score on a website, but with my preferred soundfont. I see that I can upload the score for playback/sharing/embedding on Musescore.com, but it plays back using the default soundfont, which I would like to change. Anyone have pointers on how to playback a score online using a different soundfont?

thanks!