I am using a JBL home cinema system with a Sony plasma TV. In addition to the normal analogue audio inputs, the JBL system has digital audio inputs (co-axial and optical). However, the Sony TV has only analogue outputs. Is it possible to buy an analogue to digital converter to interface between the Sony TV and the JBL system? I am currently using the analogue inputs on the JBL system, but would prefer to use the digital inputs if possible. Any help here would be much appreciated. Bernie.