i have recently bought SoundTouch 300. It works fine if I use optical connection from my cable box. However, I would like to hear analog audio from my tv and the only way is to get an analog to digital converter. I did that and connected that. Audio can play from the speakers but there is a strong humming sound which also comes.
The converter input is Stereo R/L and the converter gives uncompressed 2-channel LPCM Digital audio signal output.