Make Your Linux Desktop Look Like A Mac - Mac4Lin Project Documentation - Page 5
14 iTunes Media Player Skin
Extract the archive and move the iTunes_Leopard folder to the location indicated for each.
After extraction goto the Preferences > Skin and select the Itunes Leopard skin to apply. This is how the media player will look like:
Note: ~/ indicates the folder /home/<user name>
15 Mozilla Firefox
15.1 Firefox Extensions
Open Add ons Window, Click Tools > Add ons, drag & drop the .xpi files into Extensions window. Wait for few seconds. Then click on "Install" button. Click on "Use Add on" for all extensions you want to enable. Restart Firefox.
15.2 Safari Firefox Theme
Open Add ons window again. Drag & drop the .jar file into Themes window. Wait for few seconds. Then click on "Install" button. Click in "Apply Theme". Restart Firefox.
After applying the extensions and add-ons Firefox will now look like this:
These can be copied anywhere. Just right click on the desktop and select 'Change Desktop Background'. In the window click on 'Add wallpaper'. Now browse and select the files where the wallpapers were extracted and copied. Those will now be added to the list. Select the one you wish to apply.
Installation is now complete. Congratulations! You now have the Mac OS X user interface on your GNOME desktop.
Some software which will aid in enhancing the look are:
1) Screenlets and/or gDesklets and/or aDesklets