Pick up this 8ft light-pipe cable for only $5 at Amazon. If course, if you buy $20 more worth of gear it's free shipping, unless you're an Amazon Prime member where it would be free 2 day shipping. Buy @ Amazon

Quickie specs:

• Immune to all forms of EMI/RFI
• Low-Loss MPPA core ensures low distortion
• Superior-grade optical fiber and precision polished optical terminations
• Ultra-flexible PVC jacket makes installation easy, Non-slip rubber grip connector provides for easy installation
• Protective plastic cover protects lens from dust, dirt, and other material