Can I listen to mp3s using a headphone, without using a soundcard?

The technique works for Audio CDs, but not MP3 music CDs, unless your PC's CD-ROM drive actually supports playing MP3 CDs directly. Interestingly, some consumer CD and VCD/DVD players actually support this feature.

The technique works for Audio CDs, but not MP3 music CDs, unless your PC's CD-ROM drive actually supports playing MP3 CDs directly. Interestingly, some consumer CD and VCD/DVD players actually support this feature.