Ibiza Cams is a simple Dashboard widget designed to display the live feed of different cameras around Ibiza. Ibiza Cams also allows you to listen to 5 Ibiza based radio stations.
The Ibiza Cams widget will install via its built mechanism and all you have to do is double click the .wdgt file resulted after unarchiving the downloaded package. Once installed, your Dashboard will become active and will display the new widget.
To learn more about dealing with the Mac OS X Dashboard you can easily access the Apple support page HERE.