Does PowerDVD support S/PDIF 5.1-channel for Dolby Digital audio output?
Yes, it does. While S/PDIF is in use, your original source can be directed to an external AC-3 decoder to perform high-fidelity playback. PowerDVD supports sound cards with S/PDIF function. If your computer is equipped with an external Dolby Digital decoder / speakers system, such as Creative Desktop Theater 5.1 or others, you can fully enjoy an even richer Home Theater experience.