<p>Paul Bettany is set to play an ageing popstar in upcoming feel-good comedy &#8220;It&#8217;s Alright,&#8221; which he also co-wrote. The &#8220;Master and Commander: The Far Side of the World&#8221; and &#8220;VisionQuest&#8221; star will appear alongside fast-rising actor and musician Asha Banks (&</p>