Audacity is a free audio editor. You can record sounds over multiple layers, play sounds, import and export WAV, AIFF, Ogg Vorbis, and MP3 files, and more.

Cdparanoia extracts audio from compact discs directly as data, with no analog step between, and writes the data to a file or pipe in WAV, AIFC, AIFC or raw 16 bit linear PCM.