Cactus is an audio player. It shows all your music files in a kind of database, and you can easily browse, edit, and search your collection. It also supports synchronizing your music collection with a mobile player device. It plays MP3, WAV, and Ogg. It can also import and rip audio CDs, automatically show album covers, tag MP3 files, and maintain a fast library. A GTK 1.x binary is also available.
Paloma is a program to manage an SQL database of digital music files, and facilitate their retrieval and playback in interesting ways. It works with music files of any form -- MP3, Ogg Vorbis, MIDI... whatever you've got a player for. Paloma makes it easy to rip your entire CD collection and store it on your hard disk (or a collection of CD-Rs) for instant random access; playlists can then be generated using arbitrary SQL commands.
mp3Rip is yet another MP3 ripper. This one requires very little user intervention--you just have to insert the CD and start the program. It rips the songs as quickly as possible so another CD can be started while other CDs are being compressed. It also organizes MP3s using CDDB information, and it can recover from errors with minimal wasted effort.
KAudioCreator is an audio file creation solution for KDE. Ripping the files using KDE (with CDDB support), it allows you to use whatever encoder you wish to encode your audio files. It also provides a job control system so you can see what files have succeeded or failed, and stop or cancel jobs as the application progresses.
cdmp3 uses cdparanoia or cdda2wav to extract single tracks or even a whole CD, and converts them on-the-fly into MP3 or Ogg Vorbis files. Using the CDDB database, it is possible to include information like the artist's name or the track's title into the file name or as meta tags in the file content.
T.E.A.R. (pronounced Tair) is a console-based frontend for common MP3/OGG creation tools which automates all of the settings involved in ripping and encoding a CD. TEAR uses the CDDB database at freedb.org to name, organize, and add ID3 tags to each encoded file. It can use either cdparanoia or cdda2wav to rip .WAV files from the CD and it can use lame, bladeenc, gogo, or OggEnc to encode them. TEAR also supports SMP.
Apetag is command line tagging tool for multimedia files such as Monkey's Audio and Musepack that use the APE 2.0 standard. It also comes with a script, tagdir, that will tag all the tracks in an album by invoking apetag or other similar tools (e.g. metaflac) for each track. All that is needed is the album's freedb record.