Opening the package and peeking under the hood of Safari 4 ... Inside the bundle are all sorts of files and resources that can sometimes give you insight as to what is going on with development.

US company BitTorrent unveils a new type of media file designed to make it easier for artists to make contact and sell content to their fans.

BitTorrent suggests Bundle can act as a 21st Century version of a leaflet "If you publish a Bundle as an artist you can get the email addresses from fans. You can get the money," said Mr Mason.