iTunes can now play movie trailers and music videos thanks to new software just launched by Apple. 

iTunes software version 4.8 also allows users to manage contact and calendar information by transferring data from your Mac to your iPod. 

The software was released yesterday and is available as a free download from the website.

Fans buying the new Dave Matthews Band album Stand Up, for example, can download a digital booklet containing the album artwork and a five minute 28-second video (a 55mb download) of the making of the album, with interview clips and so on. 

Downloadable music videos are also available with the purchase of tracks from artists such as Gorillaz and Morcheeba. 

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