Save Audio Absolute Path

ComfyUI's output folder is great until it isn't. For a serious release you want your masters somewhere deliberate - your own D:\Music\Masters or /mnt/audio/releases - not buried in the output directory with forty other preview renders. Save Audio Absolute Path is the no-fuss saver for exactly that: FLAC, MP3 or WAV written to an explicit absolute directory, with quality and bit-depth control, collision handling, and safe peak handling. It's the "get this file somewhere real" node.

Its sibling, Save Audio Smart Prefix, is the one with the folder structure and metadata fanfare; this one is the direct, absolute-path version - one folder, one filename, done. They complement each other, and the pack ships both because sometimes you want the production tree and sometimes you just want the file on your Desktop.

Inputs that matter

• absolute_directory - the destination, absolute. The default is the author's Windows-style D:\Music\MiniMax\Preview, so change it - on Linux that looks like /home/you/Music/releases.
• filename - base name without extension; collision handling may add a numeric suffix.
• format - mp3 (default), flac, or wav. The tooltip sets expectations honestly: FLAC lossless, WAV uncompressed PCM/float, MP3 lossy and "intended mainly for convenient previews/distribution."
• collision_mode - auto_increment (default), overwrite, or error_if_exists. Overwrite is there if you're iterating on one file; error_if_exists is the guardrail when you never want to silently clobber a master.
• create_directories (default true) - auto-creates missing folders.
• mp3_quality - V0 (~245 kbps, default), V2, or fixed 320/256/192 kbps. Ignored for FLAC/WAV.
• flac_bit_depth - 24-bit (default, recommended for a release archive) or 16-bit.
• wav_bit_depth - 32-bit float (default; preserves headroom without integer clipping), 24-bit, or 16-bit.
• peak_handling - leave_unchanged (default) or normalize_only_if_clipping. The second applies one constant gain only when peaks exceed full scale. Note what it isn't: not loudness normalization, not a limiter.

Output

saved_paths - a STRING telling you where the file went (or the base name, depending on what the node reports). It's an output node, so it also finalizes the branch.

Installing it

Pack install via ComfyUI Manager (search "MiniMax Music Production Toolkit") or:

cd ComfyUI/custom_nodes
git clone https://github.com/jplenio/ComfyUI-MiniMax-Music-Production-Toolkit.git
cd ComfyUI-MiniMax-Music-Production-Toolkit
python -m pip install -r requirements.txt

Dependencies: scipy, soundfile, imageio-ffmpeg, mutagen, Pillow. MP3 encoding leans on imageio-ffmpeg's bundled FFmpeg. Restart ComfyUI and hard-refresh once.

Gotchas

The Windows-style default path is the first trap - anyone on Linux/macOS who queues without editing it will hit a write error or an unexpected directory. Second, "MP3 quality" and "bit depth" settings silently do nothing when the format doesn't use them, so a FLAC save ignores mp3_quality; that's by design, just don't assume otherwise. And respect error_if_exists when it matters: a release master you overwrite is gone for good, and auto_increment is the mode that protects you from yourself.