Any ripping software will do the work, like CDex for example, but bear in mind that the resulting quality will be not the same of the original mp3.
In fact, mp3 is a so-called “lossy” way to compress audio files, i.e. the file is compressed removing some information from the audio.
If you compress again the audio CD some more data will be removed, and the resulting quality can be ugly. The best way is to use a lossless codec like FLAC or APE, at least the resulting quality will be the same of the original mp3
Both codecs can be used with CDex, if I remember correctly. An alternative is using foobar 2000 to rip and convert files