Originally Posted by Daniel644
don't get me wrong Optical does have its place, but that is in audio containing atleast 5 channels (specifically "uncompressed" audio like you find on Blu-rays), but MP3's are only 2 channel (left and right) stereo (like CD's).
Something else to think about is if you have the SGP 4.0 with the Wolfson chip that only applies to the headphone jack output so you won't have any sound improvements from voodoo sound when using Bluetooth, I strongly recommend hard wiring (headphone jack to RCA type cable) as it gives you the best audio quality.
Not sure I fully understand. I don't know anything about Wolfson Chips or Voodoo sound (apart from what I just looked up online). But based on all the good information here, I don't see why that Belkin device won't suffice for my purposes.