Flipping the classroom can be quite easy using Menasha Moodle course server. You will be able to add music, video, and websites with activities. The reasoning behind Flip is to allow the students to have prior knowledge of the topic being studied in the classroom before coming through the door. Peoples' neurons need to be sparked two to three times before they can make a connection. By Flipping you have already sparked the neurons one time.
Any questions on Moodle Course Server you can go to Atomiclearning or speak to Isaac or myself for pointers.