http://www.youtube.com/view_play_list?p=137490127C806326
Browser Based Music Software: Ohm Studio, Ohm Force’s browser-based music studio, is rapidly evolving, and the developers have released this series of videos to introduced the new features.
Ohm Studio is a standalone real-time collaborative music making application (DAW/sequencer), in addition to a web based collaboration platform and a music driven online community.
Ohm Studio is still in beta testing, but you can sign up to participate in the beta at the Ohm Studio site.
It's not browser based, it's actually a standalone app for Windows or OSX ! 🙂