im currently the owner of a Sony 40" 1080p LCD and a Logitech Z5500 5.1 Multimedia Speaker System. i was told by Sony that in order for the tv speakers to work whilst my 5.1 is connected is for me to use a phono cable to connect my speakers (Audio In) to the TV's Audio Out. my questions are: 1. was Sony correct in saying/explaining that to me? 2. if it was a phono cable will my speakers still churn out the intended sound output it is capable of which is Dolby ProLogic II, DTS & THX? 3. what type/make/brand of phono cable i need to look for? is it a 2 prong one?,etc.