Play movie files directly within the Finder
Do you have a large directory of movies? Not sure what each video is? If you’re in thumbnail view at a large enough resolution (looks like 68×68 is the threshold for me) or in Cover Flow view, you can play movie files directly within the Finder by hovering over their icon to display a play button. Simply click play and the video complete with sound will play seamlessly within the Mac OS X Finder window, hover while it’s playing and there’s a pause button too.

[...] file either. Interestingly enough, the mp3 file played fine with Quick Look and even was able to play within the Finder preview, but no matter what I did I could not add or import the mp3 file to my iTunes [...]
[...] a similar note, you can also play audio files and play movies directly in the Finder by hovering over them as [...]
[...] similar feature lets you play videos directly in a Finder window, that feature works in Mac OS X 10.6 and earlier as well. stLight.options({ [...]