What does the music sound like as well any online examples?

Buddy! You've just chosen one of the most exquisite dances of the world.
Check the following links, which may give you a bare idea of what Tango and Milonga are like:
http://www.youtube.com/watch?v=5E4mBoGX6Dw

Some places in LA to go and see it:

http://www.volcada.com/guides/71-us-cities/164-los-angeles-tango

Other On line examples: http://www.tangoafficionado.com/

Hello, I'm sending you a link about one of the best couple of Tango from Argentine, Javier Rodriguez and Geraldine Rojas. Hope you enjoy it!
http://www.youtube.com/watch?v=1fJfBCEPMXs&feature=related
Other:
http://www.youtube.com/watch?v=C-lDikELlRI&feature=related