Hi there, Alaine!
Some of the outdoor and street entertainment - like the
Move It, Shake It, Celebrate It! Street Party - is, as you note. not included on the main Walt Disney World Parks calendar.
You will be able to find the schedules for these events in a couple of ways:
1 - pick up a Times Guide every time you enter one of the Parks. These Guides will list every scheduled event, including character meeting times and places, street entertainment, and the major daily events (parades, fireworks, etc.).
2 - give a call to (407) W-DISNEY. Generally, the Cast Members will be able to provide you with an idea of times of events that you want to see.
3 - check out some of the unaffiliated third-party sites. A quick Google search for one of these events will likely bring you to one of the fan sites with full schedules submitted by Guests.
With a little bit of pre-planning, you will be able to ensure that you'll see absolutely every fantastic spectacle at Walt Disney World.
Have a wonderful time!
See you later, celebrator,
-Deborah B.