Just get a coaxial to RCA out similar to this model PETDTAT Digital Optical Coax to Analog RCA Audio Converter Adapter
and then you can connect to your mini hifi system
http
/www.amazon.com/PETDTAT-Digital-Optical-Converter-Adapter/dp/B003O509PY/ref=sr_1_3?s=electronics&ie=UTF8&qid=1421340069&sr=1-3&keywords=coaxial+to+av+adapter