FFmpeg All computer platforms (free). A Swiss Army knife for formatting, splicing, converting video and audio files. Works via the command-line interface (e.g. Terminal on Mac) but is incredibly powerful. Want to split audio and video? Make a long video from lots of short videos? Extract all of the frames from a film? Use FFmpeg. ffmpeg.org
Free audio resources - a list of 40 free audio resources to help you record, edit and mix. Some of the links are podcast-specific, but many are for general audio production.
Editing, post-production
Auphonic - this is a tool you can use to balance sound, and remove hums and hisses and so on. You can upload files, clean them up and then download them again very easily, and by creating an account you can clean up 2hrs of audio per month. I’d recommend using this tool for cleaning up all spoken audio, as it does all of the crucial ‘normalising’ (making sure that the sound is at the right level, and won’t be too loud or quiet) for you too.
Audacity is a free tool for editing audio. It’s open source and works across platforms.
Ffmpeg is a command-line tool for converting audio and video between formats, joining files together, splicing, extracting audio from video, etc. You can translate between any formats – you have to master the command line, but it’s free and anything you want to do is only a Google away.
GarageBand is free if you have a Mac, and is pretty good for audio production. It’s more fully featured than you might think.
Adobe Audition is included in many peoples’ Creative Cloud bundles. It’s a very powerful audio production platform.
Bibliography / useful references
Oulipo Compendium Harry Mathews, Alastair Brotchie, and Raymond Queneau, eds. Array. London / Los Angeles: Atlas Press; Make Now Press, 2005.
Tim Clare’s Couch to 80k Bootcamp A great set of exercises to start creative writing, also useful for artists and designers. They only take 20 minutes per day!