Made a little PCM player so I can browse through @alderwick's samples collection 
Unfortunately, our slow connection won't let me upload this 2mb video on mastodon without failing halfway, so I had to put it up on youtube, but it shows how uf2, pcm, chr and icns can be previewed like on OS X.
https://www.youtube.com/watch?v=qHsDYh34dXo
@ckie thanks :)