I've been ripping my old physical audio and video media to a server running locally at home and have been worried about bitrot. I built this tool to check a large media library for correctness (by test-decoding it with FFMPEG), and to prevent future bitrot by automatically adding per-directory PAR2 files.

The tool has another feature to transcode your entire library to a given format - I'm using this to keep a USB key in my car filled with AAC 64k files for listening when Spotify is out of range or I'm too lazy to connect via Bluetooth.