5.1-CH output and SPDIF output PC + sound card + speaker + amplifier for a personal home theater with AC-3/DTS surround sound effect. Three 3.5mm jack stereo audio cables are needed for 3.5mm jack stereo speaker; three 3.5mm jack to RCA cables are needed for RCA speaker; FinalCodecs PureCodec and KMP are recommended. Set S/PDIF output on FinalCodecs and sound card and play. If you use it for Karaoke choose Stereo Mix under mixer; system: Win98/ME/2000/XP/VISTA/WIN7/WIN8/MAC OS9.1 (only 2-CH is supported for MAC); supports AES/EBUIEC60958S/PDIF; the sound card optical fiber only supports 48KHz output sampling so conversion is needed for 44KHz DTS-CD. CD: http://m5.img.dxcdn.com/CDDriver/CD/sku.303692.rar