FLAC - A free, open source codec for lossless audio compression and decompression
winLAME - winLAME is an encoder for several audio formats, including mp3 (MPEG Layer 3), Ogg Vorbis and more.
LameXP - LameXP is an Audio Encoder Front-End, a graphical user-interface for a number of audio encoders.
Express Rip - Express Rip CD ripper can convert CD audio to mp3 or wav file formats.
WavPack - WavPack is a completely open audio compression format providing lossless, high-quality lossy, and a...
Sound Juicer - Sound Juicer is a clean, mean, and lean CD ripper for GNOME 2.