AudioMove is a handy GUI-based batch audio file converter/copier program. It can convert various audio file formats to WAV or AIFF format (using libsndfile), and do high-quality sample-rate conversion at the same time (using libsamplerate). It is multi-threaded for maximum throughput, can handle thousands of files per batch, and does recursive directory scans.
The FAAC project includes the AAC encoder FAAC and decoder FAAD2. It supports several MPEG-4 object types (LC, Main, LTP, HE AAC, PS) and file formats (ADTS AAC, raw AAC, MP4), multichannel and gapless en/decoding as well as MP4 metadata tags. The codecs are compatible with standard-compliant audio applications using one or more of these profiles.
The media hive is a streaming media server and Web-based content/playlist manager. It emphasizes usability by making it easy to manage a media catalog that contains multiple media types (mp3, mp4, ogg, flac, mpg, and avi), and by providing a very full-featured playlist. It also emphasizes extensibility by making it easy to develop new media parsers, playlist actions, event handlers, skins, and more. It has an entire custom tag library devoted to skin development, making it simple for the non-developer to create radically different Web-based user interfaces. It has no installation dependencies and runs on multiple platforms.
DromeAudio is a small audio manipulation and playback library. It features a simple API for loading, generating, processing, and playing audio. Some of its features include loading and saving WAV sounds, loading Ogg Vorbis sounds, audio mixing/playback, and dynamic audio processing effects such as pitch shifting and echo.
Music Box is a handy database for your music files. If you have a large collection of them, it will help you to organize and keep them in order. Tracks can be grouped by artist, album, genre, volume, or category. Tracks can be organized into as many categories and subcategories as you need. A search function allows you to find the CD or DVD on which you stored your tracks. Music Box reads and edits the metadata information of the tracks (ID3 tags, iTunes AAC tags, etc.). The MP3, AAC, MP4, Ogg Vorbis, Monkey's Audio, and FLAC formats are supported. Music Box's data can be exported to HTML, text, or XML.
Herrie is a command line music player. It has a split-screen file manager and playlist interface and supports a number of file formats (MP3, Ogg Vorbis, wave, FLAC, etc). It also has some nice features, including a chroot() function for untrusted setups (remote logins, parties, etc). AudioScrobbler is also implemented using Curl.
Naiocast is a Web based streaming server, similar to SHOUTcast and Icecast. It currently supports MP3 audio streams only. It can be used to create an Internet radio station or a privately running jukebox. It requires neither expensive dedicated servers nor compilation on the target machine. The project includes: Naiocast Server, which accepts a stream sent from a computer and sends it to listeners over standard HTTP; and naioSC, which sends the audio stream to a Naiocast server to broadcast to clients. It runs typically in the place where the audio is generated.
Plait (pronounced "play") is a command-line jukebox and music player front end. It understands brief, easy to type queries that pick a single song, mix queries that combine works from multiple artists, and stream queries that find Shoutcast radio streams. A variety of filters are available to pick just the music you want to hear. In order to actually play the music it finds, Plait automatically hands off a playlist to one of the supported music players, or creates a playlist that you can manually load.