Audio Analysis Window is an agent skill from ad-repo/nullplayer. The classic and modern Audio Analyzer windows — a Friture-style multi-pane analyzer (Scope, Levels, Spectrogram, Octave, Pitch, Delay), the stereo PCM path that feeds them, per-pane consumer gating, and the shared AudioAnalysisDSP module. Use when modifying either analyzer window, its panes, the spectrogram shader, or the stereo/DSP plumbing.
Its SKILL.md is about 3.3k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
The repository describes itself as: nullPlayer is a free open source macOS media player with some unique features.