The MP3 encoder that comes with Windows Media Player (since version 10) has problems ripping certain CDs. The tracks may play perfectly in the media player; but you may experience skipping or other problems when playing the ripped MP3s, especially for CDs with less-than-perfect physical conditions.

The audio quality of the encoded MP3 is also not up to par with other MP3 encoders (free or commercially available). If you are concerned with the above-mentioned issues, look for other replacement MP3 encoders such as this one from Cyberlink.