How do I turn songs on a CD into MP3 files or WAV files?
The process is called “ripping”, as in “rip a CD” or “CD ripping”. You will of course, need a CD ripping program. Windows Media Player 7 or later (free) will do it, as well as RealOne (basic version is free). There are many other alternatives, some free, others not. I personally use MusicMatch Jukebox, which has a nice interface. I’ve also used Sonique and others.
