Apple's US iTunes Music Store has added six new shows from Warner Bros Entertainment, including the first season of the hit show Friends and sci-fi series Babylon 5.

Also added were the first seasons of classic Warner Bros cartoons The Flintstones and The Jetsons. Warner Bros also made available the pilot episode of a new DC Comics series Aquaman, and highlights from the eighth, ninth, and tenth seasons of comedy show MADtv. All episodes cost $1.99 each, and can be played within iTunes application or on video-enabled iPods.

Tuesday also saw one of the biggest early opponents of digital music piracy finally make its catalogue available online. Music from Metallica - the majority of the act's entire catalogue - was finally made available through iTunes.