I have just bought a LG 6500 (shocking sound) and want to connect it to my old Yamaha RX-930, until I can afford a decent surround system. As it has no optical input, RCA only, has anybody had any experience with the Coaxial/Optical to Audio Converters that sell for around $65 on TradeMe. That is the main part of my question but a secondary question would be as I have a Bose cube and base box speaker setup plus a pair of Mirage speakers, could I buy A $1000 Yamaha receiver plus a centre speaker and have passable 5.1 setup. Please know that I am a retired guy with limited funds and not razor sharp hearing. Any constuctive help would be appreciated but I am also open to maybe I am a dreamer.