Well, it's still in the beta form, but I've tested it and you can indeed play Crescendo in a web browser! 

In theory, you can play the entire game without having to download a single file, which blows my mind.

Granted, it loses a tiny bit of the formatting for input boxes, but that's a small price to pay for having a web-supported application.

Currently, the link it generates is an internal one, so I'll have to upload the web files, which I'm going to do soon.

This is all very new to me, I'm still learning. ^^;