I just bought a Panosonic CP72. There are two connection options, digital and analog. The digital connection requires an optical digital audio cable. Since my receiver accepts both, which is preferred. I would have guessed digital, however, the CP72 manual notes under Digital connections "enjoy high quality stereo sound with sampling frequencies of 88.2 and 96 kHz" while the notes under analog state "there are no limitations on sampling frequency with this type of connection. To obtain maximum performance of DVD-AUDIO multi channel linear PCM sound, the connections (analog) are recommended." Can anyone help me understand this a little better. Thanks.