Render Playback in 2.5

I recently made the jump from 2.49 to 2.57b, and so far I’m liking the new interface and animation system. However, it does seem to be missing a few things.

The main problem is that I can’t seem to replay my rendered animation. When I press “Ctrl+F11” or select “Play Rendered Animation” from the menu, it just ignores it.

I did watch a tutorial video that explained that 2.5 has no built in animation player, and that it uses the one from 2.4 if I enter the file path into the User Preferences. But, I have no idea what the name of the file I’m looking for is or if it still exists on my hard-drive since 2.5 erased all traces of 2.4 (including all of my project files).

Does anyone know what to do?

Edit: Never mind, I found a thread where someone covers this. I had to reinstall 2.49 but it works.