nixos-config/home/common/programs/claude/commands/download-playlist.md

Download a music playlist for "aulas de música" (kids music classes).

The user will paste the content of a monthly playlist from the teacher. Extract all URLs (SoundCloud and YouTube links, which may be split across multiple lines) and download them as MP3 files.

Steps

1. Parse the pasted content to extract all URLs. Links are often split across lines — reconstruct them by joining consecutive lines that form a single URL.
2. Determine the month name from the content (e.g., "Creche - março" → "marco").
3. Create the folder aulas-musica-{month} in the current directory.
4. Download all tracks as MP3 using yt-dlp via nix-shell:

   TMPDIR=/tmp nix-shell -p yt-dlp ffmpeg --run 'cd <folder> && yt-dlp -x --audio-format mp3 -o "%(title)s.%(ext)s" <urls>'
   

5. List the downloaded files to confirm everything worked.

Important

• Always use TMPDIR=/tmp before nix-shell (NixOS sandbox compatibility).
• Always use dangerouslyDisableSandbox: true for the download command.
• Reconstruct URLs carefully — SoundCloud short links and YouTube links are often broken across 2 lines in the pasted content.