For a while now it does not play well with node 0.4. Today I asked Google if there is a way around that. It happened so that there is a very simple way. You can follow the instructions from here (I have tested it and it all worked well).
I have also added some features to the music player in the browser, but I have more ideas (I hope it will not ravels into full fledged enormous memory hog it can easily become if I get carried away).
Oh and by the way on cloud9 development there is a great feature - JS beautify! It works great, helps with very complex code (like the one I use to write when creating complex html with Element in mootools) and is configurable. Try it out!