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📀 Music Utils

A collection of Bash scripts to maintain my music library efficiently. Tested on macOS, should also work on Linux.

Setup

  1. Download the scripts to a preferred location, e.g., home directory.
  2. Ensure they are executable:
chmod +x /path/to/music-utils/*

Requirements

install flac

brew install flac

install ffmpeg

brew install ffmpeg

install mp3info (for mp3lowlog)

brew install mp3info

FLAC CD Quality

Convert FLAC files from high-resolution (e.g., 24-bit/96kHz) to CD quality (16-bit/44.1kHz or 48kHz).

The script detects the sample rate of each file and converts it to the nearest multiple of 44.1kHz or 48kHz:

  • 96kHz → 48kHz
  • 192kHz → 48kHz
  • 88.2kHz → 44.1kHz

Why CD Quality?

  • 16-bit gives 96dB of dynamic range.
  • 44.1kHz covers 0Hz to 22,050Hz, covering human hearing.
  • High-resolution audio benefits recording and production, but for playback, differences are inaudible.

Recursive FLAC to MP3 320kbps

Converts FLAC files to MP3 at 320kbps recursively while preserving folder structure.

cd /path/to/Music/Artist1/
/path/to/flac2mp3

Creates a new mp3 folder containing album subfolders with MP3 files while keeping original FLAC folders:

Music/
├── Artist1/
│   ├── 1998 - Album 1/
│   │   └── *.flac
│   ├── 2000 - Album 2/
│   │   └── *.flac
│   └── mp3/
│       ├── 1998 - Album 1/
│       │   └── *.mp3
│       └── 2000 - Album 2/
│           └── *.mp3

FLAC Rename According to CUE File

When splitting a single album FLAC or APE file into tracks, filenames often appear as:

split-track-01.flac
split-track-02.flac

This script reads the accompanying .cue file and renames tracks accordingly:

01 Mojo Pin.flac
02 Grace.flac

Usage

cd /path/to/splitted/album/
/path/to/flacrename

Find MP3 Low Bitrate

Finds MP3 files with bitrate lower than 320kbps recursively. You can specify a different threshold (e.g., 256kbps):

mp3lowlog 256

Usage

cd /path/to/Music/root/
/path/to/mp3lowlog 256

Generates a log file lowbitrate.log with all files below the threshold.

Notes

  • I reccomend to test those scripts on a test copy of your files/folders to ensure nothing goes wrong.
  • Backup your music before running these scripts.