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Skill Claude CodeCodex

Sonos UPnP discovery, multi-room casting, coordinator transfer, custom checkbox UI, and protocol quirks. Use when working on Sonos casting, UPnP control, multi-room audio, or group management.

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Skill Claude CodeCodex

The dedicated Metal-based spectrum analyzer window — 84-bar mode list, window geometry, docking behavior, the cropped analyzer curve used by Classic/Enhanced/Ultra, visclassic exact mode and its waveform demand. Use when modifying the spectrum window chrome, mode list, controls, or analyzer curve.

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Skill Claude CodeCodex

Rip a media URL to FLAC/MP3/MP4 via yt-dlp — quality-first format selection, metadata tagging, cover art, metadata-based filenames, .cue from chapters, and the main-window activity band. Use when working on the Stream Ripper, yt-dlp/ffmpeg integration, or the Output → Streaming menu.

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Skill Claude CodeCodex

Subsonic/Navidrome API, authentication, music folder selection, streaming, and scrobbling. Use when working on Subsonic/Navidrome integration, library browsing, music folder filtering, or playback reporting.

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Skill Claude CodeCodex

UI testing mode, accessibility identifiers, and testing workflows. Use when writing tests, adding testable UI elements, or understanding test structure and philosophy.

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Skill Claude CodeCodex

Implementation reference for NullPlayer's Tripex visualization engine — the MIT-licensed port of ben-marsh/tripex (Winamp-era D3D9 3D visualizer, 25 effects) onto macOS as a ProjectM-peer engine. Covers the CTripexCore C ABI, upstream-vs-port file split, OpenGL 3.2 renderer subclass, audio ring buffer, threading…

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Skill Claude CodeCodex

Coordinate systems, scaling architecture, hit testing, skin sprite rendering, window layout, and Compact Mode for NullPlayer's UI. Use when working on window scaling, skin rendering, coordinate transforms, visual layout, compact/status-item windows, or playlist/marquee text rendering.

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Skill Claude CodeCodex

User-facing features, menus, keyboard shortcuts, and functionality overview. Use when documenting features, understanding user workflows, or explaining capabilities to users.

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Skill Claude CodeCodex

Comprehensive implementation and profile reference for NullPlayer's visclassic mode (CVisClassicCore, VisClassicBridge, SpectrumAnalyzerView integration, menu/keyboard controls, transparent-background behavior, persistence keys, and bundled INI profiles). Use when modifying visclassic rendering behavior, profile…

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Skill Claude CodeCodex

Index of NullPlayer's visualization systems. Use this to discover which sub-skill covers the specific visualizer you're working on (main window vis, spectrum window, album art, ProjectM/MilkDrop, Geiss, Tripex, Met Museum, visclassic, Metal mode internals).

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Skill Claude CodeCodex

YouTube channel uploads in the Radio tab — browse channels, download audio (FLAC / MP3) or video (720p / 1080p) ad-free, store in a user folder, and play/cast locally. Use when working on YouTube source UI, channel/video listing, downloads, manifest tracking, or format settings.