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Gloobus Preview is a Gnome application based on Apple’s “Quicklook”, designed to enable a full screen preview of any kind of file. Gloobus currently supports the following files:

Images: jpeg / png / icns / bmp / svg / gif / psd / xcf
Documents: pdf / cbr / cbz / doc / xls / odf / ods / odp / ppt
Source: c++ / c# / java / javascript / php / xml / log / sh / python
Audio: mp3 / ogg / midi / 3gp / wav
Video: mpg /avi / ogg / 3gp / mkv / flv
Other: folders / ttf / srt / plain-text

I didn't try all the extensions mentioned above, however I did try a GIMP .xcf file and for some reason it didn't work. But it did work for images, avi, flv, folders, mp3, archive and so on.

gloobus preview mp3

Gloobus Preview has a PPA for Ubuntu Karmic, but unfortunately there are no packages for Ubuntu 10.04 Lucid Lynx so to install it, you need to compile it. Read on!

The Gloobus Preview PPA has just been updated with Ubuntu 10.04 packages! Read on!

Before proceeding to installing Gloobus Preview in Ubuntu 10.04 Lucid Lynx, here is a video I've just recorded with Gloobus Preview in action:

To install Gloobus Preview in Ubuntu 10.04 Lucid Lynx, follow the steps below

1. Add the PPA
sudo add-apt-repository ppa:gloobus-dev/gloobus-preview

Note: there are Gloobus Preview packages in the following repositories too:
elementary-desktop ppa : ppa:elementaryart/elementarydesktop
nautilus-elementary ppa : ppa:am-monkeyd/nautilus-elementary-ppa

So if you have any of those already added, skip this step.

2. Install Gloobus Preview
sudo apt-get update && sudo apt-get install gloobus-preview

3. Set a keybinding for Gloobus Preview

Only for non Nautilus Elementary users:

Go to System > Preferences > CompizConfig Settings Manager, enable "Commands" and then click it. On the first tab called "Command", enter "gloobus-preview" for the first command (called "Command line 0"). Then on the second tab called "Key Bindings", under "Run command 0" enter your desired key combination such as Ctrl + SPACE or whatever you want.

Important: then, to use Gloobus Preview, you must select a file, press Ctrl + C and then the keybinding you've set in step 4 above!

Note for Nautilus Elementary users: If you use Nautilus Elementary 2.30, you don't need to set up any keybindings or press Ctrl + C. Simply select a file and press the space bar. Press SPACE again to close it.