Rewrite of Sonixd.
Features:
- MPV player backend
- Web player backend
- Modern UI
- Scrobble playback to your server
- Smart playlist editor (Navidrome)
- Synchronized and unsynchronized lyrics support

Rewrite of Sonixd.

Ferocious File Converter is a graphical front-end for ReSampler, and potentially any number of other command-line audio conversion tools.
It provides a convenient and easy-to-use method for converting audio files between a number of formats.
github.com/jniemann66/ferocious

A ripper and encoder frontend for Linux. Requires libsndfile and lame to work.
sourceforge.net/projects/lcdex
User interface front end supporting famous MP3Gain engine which analyzes and losslessly adjusts MP3 files to a specified target volume. A complete re-creation (made in QT5) of the original MP3Gain GUI, however it can be run on more platforms.

dkaac reads linear PCM audio in either WAV, raw PCM, or CAF format, and encodes it into either M4A / AAC file. If the input file is "-", data is read from stdin. Likewise, if the output file is "-", data is written to stdout if one of streamable AAC transport formats are selected by **-f**. When CAF input and M4A output is used, tags in CAF file are copied into the resulting M4A. github.com/nu774/fdkaac github.com/mstorsjo/fdk-aac launchpad.net/ubuntu/bionic/+package/fdkaac packages.debian.org/stretch/fdkaac
The shelfelf is a web frontend to send commands to your music player (iTunes, mpd, squeezebox, xmms2,…). The shelfelf works with all tested browsers (except for Microsoft’s Internet Explorer, Amiga’s AWeb and lynx), but the interface is designed for tablets (with a browser running in full screen mode) like Apple’s iPad. Linux (or Mac OS X) with Apache webserver, MySQL database and the ability to send commands to your stereo equipment is required.
qaac is a command line AAC / ALAC encoder frontend based on Apple encoder, strongly influenced by tmkk.pv.land.to/qtaacenc/.
qaac requires Apple Application Support that is included in iTunes or QuickTime. If you are using 64 bit Windows, recent 64 bit iTunes (ver 12.1 or later) is recommended. 64 bit installer for iTunes (iTunes6464Setup.exe) includes both of 32 bit and 64 bit Apple Application Support, therefore you can run both of qaac.exe and qaac64.exe with its installation.
.ogg is a free audio format alternative. It features sound quality that is generally higher than MP3, and has no licensing fees. Ogg Drop will encode audio tracks and CD’s into .oggs. Ogg Drop is entirely free.
Ogg Drop includes a CDDB lookup of the FreeDB music database. Stick an audio CD into Ogg Drop, and it should be able to identify the songs automatically, and tag the songs for you.

FLAC Frontend is a convenient way for Windows users not used to working with command lines to use the official FLAC tools. It accepts WAVE, W64, AIFF and RAW files for encoding and outputs FLAC or OGG-FLAC files. It is able to decode FLAC files, test them, fingerprint them and re-encode them. It has drag-and-drop support too. It is tested on Windows XP SP3 and Windows 7, but should work with Windows XP SP2 or newer. It requires .NET 2.0 or later.
A Mac OSX GUI frontend for open source audio codecs. There is an older Windows version available as well.

FluidSynth is a real-time software synthesizer based on the SoundFont 2 specifications and has reached widespread distribution. FluidSynth itself does not have a graphical user interface, but due to its powerful API several applications utilize it and it has even found its way onto embedded systems and is used in some mobile apps.
Features:
- Cross platform support (Linux, macOS and Windows to name a few)
- SoundFont 2 support
- SoundFont 3 support (vorbis-compressed SF2)
- Realtime effect control using SoundFont 2.01 modulators
- Playback of MIDI files
- Shared library which can be used in other programs
- Built in command line shell

QSynth is a fluidsynth GUI front-end application written in C++ around the Qt framework using Qt Designer.

FluidPatcher is a performance-oriented interface for FluidSynth built using wxpython to create a simple GUI that allows live editing, selecting, and playing of patches. A patch is a collection of settings such as soundfont presets for each MIDI channel, control-change/sysex messages to send when the patch is selected, and midi router or effects settings. Groups of patches are stored in banks, which are saved as human-readable and -editable YAML files. This allows a musician to easily create complex combinations of synthesizer settings ahead of time and switch between them on the fly during a performance.
LameXP is a free multi-format audio file converter that supports a variety of output formats, including MP3, AAC/MP4, Ogg Vorbis, Opus, as well as FLAC, and an even higher number of input formats. It also supports batch processing and can utilize multiple processor cores.
