Im wasnt sure where this goes but..
 

I have a Creative Zen Moziac and I would like to import some videos onto it but it says its not the right type of file.. Can/How do you change it into the right thing?

Looks like your player accepts only M-JPEG videos. If the player doesn't come with software to convert to that format, simply go to Google and type "whatever format you're converting from to MJPEG converter" and see if you can find a free conversion program.