Sox – The Swiss Army knife of sound processing

SoX is a cross-platform command line utility that can convert various formats of computer audio files into other formats. It can also apply various effects to these sound files, and, as an added bonus, SoX can play and record audio files on most platforms.

Sox

Sox sample session

Website
Features
Download
Documentation
Scripts
FAQ

BatchEncoder ~ An opensource freeware audio conversion frontend

BatchEncoder

BatchEncoder is an audio files conversion software. It supports most of popular audio file formats including lossy and lossless compression. The program is very simple to use. BatchEncoder is basically GUI front-end for command-line tools. All it does is create background processes and pass arguments to it with options set in presets/format menu and additionally adds input and output file paths.

Website
Discussion ~ Hydrogen Audio
GitHub file repository

YAFS – Changing song order on USB sticks

 

Some players display, or play files, in the order that the file was originally copied to a USB drive or stick. YAFS (Yet Another FAT Sorter) allows the order to be changed to whatever you prefer. YAFS is a multi-platform, open source, freeware, command line utility with a GUI (Graphical User Interface).

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gnudb.org ~ CD metadata database

gnudb.org ~ a new home for the freedb database

How to use gnudb.org:

Configure your CDDB or freedb-aware software to point to gnudb.gnudb.org as your CDDB / freedb-server.

All official gnudb servers are running cddbp at port 8880 and http at port 80

The path for http-access is /~cddb/cddb.cgi

Access a xmcd file directly when you know the genre and discid at:

http://www.gnudb.org/gnudb/genre/discid

Example ~ http://www.gnudb.org/gnudb/rock/390f1215

Source: gnudb.org CD database

VU Meter – Linux – Standalone

meters

PeppyMeter is a software VU Meter written in Python. It was originally developed as the new ‘VU Meter’ screensaver for Peppy Player. With minor modifications it became a stand-alone application. PeppyMeter gets audio data from media players (e.g. mpd) via fifo and displays current volume level in a Graphical User Interface in the form of a traditional VU Meter.

PeppyMeter
Forum: diyAudio

Ex Falso / Quod Libet – Cross Platform Music Editor / Library / Player

Quod Libet

Quod Libet is a GTK+-based audio player written in Python, using the Mutagen tagging library. It’s designed around the idea that you know how to organize your music better than we do. It lets you make playlists based on regular expressions (don’t worry, regular searches work too). It lets you display and edit any tags you want in the file, for all the file formats it supports.

Unlike some, Quod Libet will scale to libraries with tens of thousands of songs. It also supports most of the features you’d expect from a modern media player: Unicode support, advanced tag editing, ReplayGain, podcasts & Internet radio, album art support and all major audio formats – see the screenshots.

Ex Falso is a program that uses the same tag editing backend as Quod Libet, but isn’t connected to an audio player. If you’re perfectly happy with your favorite player and just want something that can handle tagging, Ex Falso is for you.

Website
Download
Features
Guide
Screenshots

Audio RightMark – Independent Audio Benchmarking

Need help deciding which PC audio hardware to purchase? Want to test some gear? Open source, freeware hardware analysis software and posted RMAA test results for common hardware.

Website
Download
Test Results

Freeware
Open Source