You've probably faced this problem. I certainly have. I've spent more than a little time online, looking for software to play or convert some obscure file format. (And after playing the file, I wonder, "Why did I bother?" But that's a story for another day.)
That's a long way of getting to this week's fun tool-MediaCoder. This is a multimedia Swiss Army Knife. It can convert all sorts of formats into lots of other formats. For instance, it can convert QuickTime files taken with a digital camera. That's a big boon for Windows users.
MediaCoder is under constant development. It's not the easiest program I've tried. So, it might be better for more advanced users. But if you have a file you just can't crack, MediaCoder should do the trick.
WARNING: The MediaCoder site is clutter with ads. Some are difficult to recognize as advertising. MediaCoder's setup is done through the browser. Setup is also cluttered with ads. Some are not marked. Clicking on an ad can download unwanted spyware to your computer. Only people who are confident that they can recognize and avoid advertising should download MediaCoder.
System: Windows XP, Vista and 7, Mac OS X