Entire song playback isn't live yet, but it's coming! It's a really important feature to me, and I want to get it right. I could enable it in a very simple form, but I think it will be much more useful if I can ship it with powerful tempo/timing control.

Thanks for checking it out!

Thanks for making this! This was my first questions as well. Can you ship the very simple form, and later ship the more robust version?

I actually might do that. It's been the top feature request of the day. I'll look into it this week and see if I can ship something useful to tide us all over until I can improve it.