Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
If the data is already compressed (video, jpegs, etc.), Zip or Stuffit won't make much difference.
 
Most of what I'm trying to compress is video, but there is some music as well.

All I want to do is shrink the size, then be able to restore it to its normal size when it arrives in its new location.

The problem is both video and music (unless lossless formats) are already compressed, so there's not much further lossless data compression can go (like zip, stuffit, etc.)
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.