Amazon.com: Digital S/PDIF Audio to Analog 5.1 Surround Processor with USB MP3 WMP Playback : Electronics
Audio cables and settings (Dolby Digital 5.1)
microware 5.1ch Digital Audio Decoder Optical Coaxial Toslink to Analog AC-3/DTS Converter 3.5mm Output with Optical Cable Media Streaming Device - microware : Flipkart.com
RCA Surround Sound: Analog 5.1 Audio Explained | Home Cinema Guide
Digital Optical Fiber Audio Cable SPDIF Output Cable 5.1 Channel Power Amplifier Audio Fiber Optic Cable 2m - Walmart.com
Amazon.com: SGEYR 5.1 Audio Console Adapter Convert Stereo RCA to 3 x 1/8 (3.5mm) Jack Bidirectional Conversion for 5.1 Multimedia Speaker : Electronics
Amazon.com: Ancable Replacement Audio Cable for 5.1 Channel Logitech Computer Speakers 3.5mm 1/8 TRS Plug Male to Male 6ft,Compatible with logitech z-5500, z-5450, z-5400, z-5300, z-906, z-680, x540 etc. : Electronics
SOUTHSKY 5.1CH Digital Sound Surround Decoder,2 Optical SPDIF,Coaxial,3.5mm Jack to 5.1 Analog Audio Converter,6RCA Output,Support Dolby AC3,DTS,Compatible with DVD,PS2,PS4,Xbox,HDTV,Amplifier : Amazon.co.uk: Electronics & Photo
Amazon.com: Replacement Audio Cable Compatible with Logitech 5.1 Channel Computer Speakers Color Coded 3.5mm Minijack 3 Male to 3 Male 6.5ft,Compatible with logitech z-5500, z-5450, z-5400, z-5300, z-906, z-680, : Electronics
SOUDAMINI TV-out Cable 5.1 Audio Rush Digital Sound Decoder Converter - Optical SPDIF/ Coaxial Dolby AC3 DTS stereo(R/L) to 5.1CH Analog Audio (6RCA Output) - SOUDAMINI : Flipkart.com
Multichannel Audio Cables at Blue Jeans Cable
Help Guide | Connecting 7.1-channel speaker system using surround back speakers