“Muscle Shoals,” a film about an Alabama music recording studio, won the Audience Award for the 10th annual Homer Documentary Film Festival. Second place went to “Crash Reel,” about a snow boarder’s recovery from a devastating accident, while third place went to “Genetic Roulette,” about genetically modified organisms. Finishing a close fourth was “20 Feet from Stardom,” about back-up singers to popular musical acts. “The Old Believers,” director Ryan Loughlin’s short film about the lower Kenai Peninsula Old Believer communities, finished fifth.