I normally record my CDs on a mac so I'll describe from that perspective. I have found that recording disc to disc is prone to failures, so I actually record the music to my HD as an .aiff (i thinkt that is the extension) and then record from the HD at 2x speed. In the case of an MP3, there are "uncompression" programs that change them back to a format that CD players can read. You can subsititute .wav for .aiff in the example above.
