GarageBand for Mac: Enhanced Podcasts (.m4a, .m4v) By Scalper1 | November 4, 2013 0 Comment Scalper1 News Learn which versions of GarageBand support creating enhanced podcast files (.m4a, .m4v).Scalper1 News Scalper1 News Related posts: Which versions of GarageBand feature Magic GarageBand? GarageBand: About the GarageBand for Mac (v10.0) update Expanding GarageBand for Mac (v10.0) content with an in-app purchase GarageBand for Mac (v10.0): Unexpected behavior with Audio Units plug-ins