SLOOP

Felucca is free, GPL-3.0-only custom firmware for the M-VAVE FM-1 synthesizer, developed by Hügelton Instruments. It replaces the device's official firmware with a multi-engine synthesizer supporting thirteen engines, four tracks with eight shared voices, a 64-step sequencer per track, chord and scale keyboard modes, an arpeggiator, modulation, per-track and master effects, presets, projects, and USB MIDI and audio. It can be installed over USB through a web installer in Chrome or Edge, or with a Python terminal tool, without additional hardware. Its web editor exposes synthesizer parameters, a six-operator FM patch editor, step grids, mixing, preset management, sample upload and recording with trimming, and full backup and restore; the installer can also return the device to official firmware. The repository includes firmware, hardware-layer, web, build, installer, sample-upload, and test sources, with bundled fonts, DSP components, SDK files, and samples retaining their stated separate licenses.

Spun is a source-available music player for Linux that presents album artwork through CD, vinyl, cassette, and TP-7-inspired recorder interfaces. It plays local music and can browse YouTube Music anonymously, connect to Jellyfin, Navidrome, or Subsonic servers, and control Apple Music through a running Cider instance. Its player provides shared playback controls, queues, album details, lyrics, seeking, mini mode, desktop media controls, and optional modeled 3D views with lighting based on Noctalia's wallpaper palette. The application supports local imports without copying or modifying the original music files, separate queues for its supported sources, and an optional TX-6-style mixer for local, YouTube, Jellyfin, or Subsonic audio. YouTube support uses an isolated Python helper based on ytmusicapi and yt-dlp; Cider connectivity uses its local API and handles Apple Music authentication and streaming. The mixer performs EQ, delay, compression, and channel mixing inside Spun, but does not support external USB hardware, recording, MIDI, or separate auxiliary outputs. Spun is built from source with CMake, Ninja, Qt 6.8 or later, and TagLib 2.0 or later; Qt Quick 3D is optional. The repository states that there is no packaged installer yet. Its original code and assets are distributed under the PolyForm Noncommercial License 1.0.0, which is source-available and not OSI-approved.

Salt Player is a multi-platform local music playback app developed by Moriafly. Its official repository is used for Android package releases, issue tracking, feedback, and announcements; Android support requires version 6.0 or later and includes arm64-v8a and armeabi-v7a packages. The project also provides a Windows version and related open-source components, including Salt UI for Compose Multiplatform and Media Kit for Android media services and notification management.

MusicFree is a plugin-based, customizable, ad-free music player for Android and HarmonyOS. It does not include built-in music sources; plugins provide searching for music, albums, and artists, playback, album and artist views, single and playlist imports, and lyrics retrieval. The player handles functions such as pagination and caching while plugins implement the source-specific input and output logic. MusicFree stores data locally and supports light and dark themes, custom backgrounds, and associating lyrics between songs. Plugins are CommonJS modules that can be installed locally or from the network, including JavaScript files and JSON descriptions. The project is open source under the AGPL-3.0 license and warns that third-party plugins may contain security or copyright-related risks.

Termixer is a terminal-based two-deck DJ mixer for Unix, built in Rust with ratatui for live performance with TidalCycles. It controls audio from MPV and SuperCollider and provides deck faders, panning, three-band EQ, low- and high-pass filters, crossfading, cue output, microphone input, and a 4x4 sample-pad grid with sequencing. It can record deck, master, microphone, synthesizer, or pad output to MP3, WAV, FLAC, or OGG, and supports SuperCollider SynthDefs, a built-in sine synthesizer, Vim-style navigation, and JSON import/export for pad and sequence sessions. Installation is available through crates.io, GitHub release archives, or source; MPV and FFmpeg are required for the corresponding playback and recording functions, while SuperCollider is optional for TidalCycles integration.