EASTHAMPTON — Music and positive spirits filled the air Saturday during the seventh annual Arcadia Folk Festival at the Mass Audubon Arcadia Wildlife Sanctuary. The constant beat of the dhol from Red Baraat member and founder Sunny Jain beckoned for crowd members to wave their hands and dance in response. Festivalgoers who wanted a quieter, personal yet humorous performance walked deeper into the woods to listen to Steve Poltz strum his guitar and sing about his liver transplant.