GNU Radio is a free & open-source software development toolkit that provides signal processing blocks to implement software radios. It can be used with readily-available low-cost external RF hardware to create software-defined radios, or without hardware in a simulation-like environment. It is widely used in research, industry, academia, government, and hobbyist environments to support both wireless communications research and real-world radio systems.
GNU Radio is a free software development toolkit that provides signal processing blocks to implement software-defined radios and signal processing systems. It can be used with external radio frequency (RF) hardware to create software-defined radios, or without hardware in a simulation-like environment. It is widely used in hobbyist, academic, and commercial environments to support both wireless communications research and real-world radio systems.
A small script to sync your play counts from last.fm back to iTunes. Supports both Windows and Mac OS X without any native dependencies. (Requires Music.app on OS X.)
Useful if you scrobble to last.fm from iTunes on multiple computers / devices and want to keep your local play counts consistent.
Midimusic provides archives of Wurlitzer and Estey music rolls in e-roll format. These are downloadable and the music can be played using eplayOrgan. An archive of Miditzer organ midi files is also provided.
All features of the original e-rolls and midis are available including stops and swell.
eplayOrgan is a fully featured organ which can also be played from a full midified console or standard midi keyboards. Stops may be set using a touch screen.
eplayOrgan operates under Windows. Mac and Linux are supported under Wine. The programs work just the same under Wine on Mac and Linux as they do under Windows.
Self-hosted web app for browsing, playing, and editing music file metadata. Features a three-panel UI to navigate your library, listen to tracks, and write tag changes directly back to audio files. Built with Next.js, React, Prisma + SQLite, and node-taglib-sharp.
Most metadata editors are either desktop-only, command-line tools, or bloated apps with steep learning curves. If your music lives on a NAS, a server, or a headless machine, editing tags means SSH, mounting drives, or syncing files back and forth.
Tagr takes a different approach:
Run it anywhere — Docker, bare metal, your NAS. If it runs Node.js, it runs Tagr.
Edit from any browser — No installs, no plugins. Just open a tab.
Do one thing well — Browse your library, edit tags, save. That’s it.
Features:
Metadata Editing
Edit 40+ metadata fields inline — title, artist, album, year, genre, composer, BPM, lyrics, and more
Album art management — view, replace, and upload cover images directly
Star ratings (1–5) with a visual widget
Support for track/disc numbering, sort fields, catalog numbers, barcodes, and extended tags
Read-only display of audio properties (codec, bitrate, sample rate, channels, bits per sample)
Music Player
Built-in audio player with interactive waveform visualization (WaveSurfer.js)
Play/pause, previous/next track navigation
Click-to-seek on the waveform
Auto-advance to next song
Collapsible sidebar player with album art, title, and artist display
Library Browsing
Three-panel layout — folder tree, song list, and detail editor side by side
Folder tree with hierarchical navigation and real-time search
Sorting on any column — title, artist, album, year, duration, bitrate, date added, and dozens more
Advanced filtering — text, numeric ranges, date ranges, and boolean filters across all fields
Customizable columns — show/hide any of 40+ columns to match your workflow
Virtual scrolling and infinite pagination for large libraries
Rescrobbled is a music scrobbler daemon. It detects active media players running on D-Bus using MPRIS, automatically updates “now playing” status, and scrobbles songs to Last.fm or ListenBrainz-compatible services as they play.
Among other things, due to sharing a Spotify account, I needed a way to scrobble to Last.fm without connecting the Spotify account to my Last.fm account. Rescrobbled offers a simple solution for this.
Easy Audio Sync is an audio library syncing and conversion utility. The intended use is syncing an audio library with many lossless files to a mobile device with limited storage.
The program’s design is inspired by the rsync utility. It supports folder-based source to destination syncing, with added audio transcoding capability, and is GUI-based instead of CLI-based.
Features:
Custom FFmpeg-based audio transcoding engine
Multithreaded operation for fast conversions
4 lossy output codecs supported: MP3, AAC, Ogg Vorbis, and Opus
Robust metadata parser ensures tags and cover art are correctly transferred when converting between different formats
ReplayGain volume adjustments
Destination folder cleaning (deleting files that no longer exist in the source)