Firstly, I do in fact have the proper codecs (at least to my newbie knowledge) because I can go to apple.com/trailers and firefox plays all their trailers .mov files without a problem

So my question is...I've transferred a bunch of .jpeg's (plays fine) and .mov's (doesn't play) into /home/sony/Pictures/Panasonic Pictures and Videos/June 15, 2008 folder

How come when I double click on a simple .mov file, Totem movie player opens up and then shuts off?

Is there any way to watching a simple .mov files that's on my hard drive? I love ubuntu in the short time I've had this but something this simple is so aggravating!