Gloobus-Preview is an extension for Nautilus file browser to preview images, audios, videos, and so forth. It’s based on Apple’s “Quicklook”.

Ubuntu 11.10 with Nautilus 3.2 has a new feature “gnome-sushi” file preview (not installed by default, use sudo apt-get install gnome-sushi). I like Gloobus-Preview more than gnome-sushi.

Here are the commands installing gloobus-preview:

sudo add-apt-repository ppa:gloobus-dev/gloobus-preview
sudo apt-get update
sudo apt-get install gloobus-preview gloobus-sushi

Gnome-sushi

Gloobus-preview