dudl is a collection of tools to grab, encode, and rename MP3 files, archive them, and maintain a database of all files. On top of this runs the dudld Jukebox daemon that plays your files through gstreamer. dudld's strengths are the powerful tag based filters, the capability to cope with very large collections, and the network protocol to control its operation. There is a full featured command-line client, a minimalistic GTK client, and a lirc client. Writing new clients should be easy with the supplied client libraries.
bbJewel creates a PDF of a cover for the listed MP3 files for the purpose of printing a jewel case insert. It parses each file and extract the title, artist, and length of the recording. It also scans the files for included cover images. You can provide the CD title and the cover image to use on the command line.
datapacker is a tool to group files by size such that they fill fixed-size containers (called "bins") using the minimum number of containers. This is useful, for instance, if you want to archive a number of files to CD or DVD, and want to organize them such that you use the minimum possible number of CDs or DVDs. In many cases, datapacker executes almost instantaneously. Of particular note, the hardlink action can be used to effectively copy data into bins without having to actually copy the data at all. datapacker is a tool in the traditional Unix style; it can be used in pipes and call other tools.
SvOlli's Little Audio Related Thingies, or SLART for short, is a compilation of rather simple programs that are related to audio files: it consists of a player (Partyman), a CD ripper, a tag editor, and some other tools. These programs can communicate with each other via a custom IPC bus, so a newly ripped track can be automatically queued in the player, for example.
ioAmarok is a music player for Infodomestic Objects (Linux/BSD) with an intuitive interface. It is built with SpatialBundle technology, so it does not require installation nor any administrator privilege access. It does not depend on any libraries such as the KDE libraries nor the Qt libraries.
ripx is a script designed to make ripping CDs as easy as possible. It features CDDB lookup, ID3 tag editing prior to ripping, playlist file generation, album directory creation, and generally a nicer interface than many similar tools. By default, ripx uses cdparanoia to extract audio from CDs and lame to encode the audio to MP3 format at the quality of your choice. If you wish to use alternative applications for extraction or encoding, modifying ripx to handle these should be fairly painless.
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.
KFreeDB is an application for interacting with the FreeDB disc information database. It allows the user to query the database for a disc in a local drive, or submit new entries. It communicates with the FreeDB server via HTTP. It also features support for inexact/multiple matches, and resubmission of entries.