Turn one long recording into separate files in Audacity 4.0.1. Find the boundaries by eye or with Label sounds, put a named label over each song, export every song in one pass, and get the file names, tags and formats right.
Which FFmpeg to download for Audacity on Windows, macOS and Linux, where Audacity looks for it, how to fix “FFmpeg library not found”, why Audacity 4 won’t import M4A files yet and what to do instead, and whether to convert M4A to WAV before you edit.
When Audacity won’t record, the cause is usually the device rather than Audacity itself. A 60-second checklist — rescan, the microphone permission, a disabled device, a test outside Audacity, the level — then each error message, from -9996 to “Error opening sound device”, with its cause and its fix.
Noise reduction leaves some sounds alone. How to lower breaths with Clip gain, fix mouth clicks with Click removal and Repair, take out squeaks, coughs and chair noise, and what really helps against room echo in Audacity 4.
What ACX’s three numbers measure and how to meet them in Audacity — one chapter in Audacity 4 with a high-pass filter, RMS loudness normalization and a limiter on the Master, a whole book with the Audiobook Mastering macro in Audacity 3, how to fix a noise floor that fails, and why over-processing fails human review.