Akron, Ohio’s very own Joseph Arthur is having a busy year. First, Michael Stipe and a bunch of other big-name artists released an EP with different versions of his song “In the Sun” to raise money for victims of Hurricane Katrina. Then, he showed up on The Twilight Singers’ excellent album Powder Burns, adding that sweet falsetto to several of the songs. And last night the now-New York-based artist was out at Jammin’ Java promoting…