Here's a Python script to randomize the start times of all MDD
Pointers in a given scene. The user must have Python installed on his or
her machine:
http://www.python.org

Double-clicking on the "RandomizeMDDpointer.py" script will launch three
requesters. The first requester asks for a scene file. The second
requester asks for an output path for the script-altered scene, and the
third requester asks for a maximum offset in seconds.

For example, given this scene file to be randomized:

C:\Content\Scenes\MDDpointer.lws

...the second requester will suggest this output path:

C:\Content\Scenes\MDDpointer_randomized.lws

...and the third requester will suggest an offset of 1.0. If left at its
default of 1.0 second, each start time in the scene will randomly have a
value between 0.0 and 1.0 seconds subtracted from it. The higher this
number, the greater the range of offsets.