Following a pair of DVD releases, Shout! Factory has announced the release of several performances on CD from the famous US Festival in California. Spearheaded by Apple Computer co-founder Steve Wozniak, the US Festival intended to be a celebration of technology and culture, with a temporary stage and open-air venue paid for by Wozniak himself just for the purposes of the festival. (Initially called the Glen Helen Pavilion, the San Manuel Amphitheater, where the festival was held, remains the largest of its kind in the country.) For two blisteringly hot weekends –…