JANN HENDRY/Acorn Newspapers CASHING IN AT THE PARK—The Mighty Cash Cats, a musical tribute group to Johnny Cash, perform at the Summer Concert in the Park at Conejo Community Park. They played in Thousand Oaks last Sunday. The next free concert is planned for 5 p.m. Sun., Aug. 9 and will feature Lisa Hayley and the Zydecats. The park is at Dover and Hendrix avenues.