WinRefine

On mouse hover show thumbnails, MP3, audio preview and visual of all the media files such as audio, video or images.

For example, if you are on a folder containing MP3 files, you hover over on a file, without opening any player, it starts the music in the background.
In addition to Audio files, allows you to display thumbnails of Images even faster! In fact you will have the same procedure as the Audio files, but you'll see a small box where you can see the preview. The same thing with Videos!