Play, record and mix your own music like a pro. Bring your computer, audio files and questions to look at a few of the options with GarageBand and Audacity and best practices. Audacity is a free application to listen to, edit and record sound files. It lets you create your own recordings or edit existing ones. We will show you how to download the application and corresponding LAME and FMpeg libraries, acquire or import audio, record, edit, add filtering and export to .mp3 and m4a formats. April 2, noon-1 p.m., N285 Music Library