This may be dumb question but I haven't been able to find anything answers through Google. I recently purchased a ZVOX ZBASE 555 virtual surround sound and I'm unsure what sound sources I should I enable on my Playstation 3. Should I just be using stereo or should I be using DTS or Dolby Digital 5.1? How do I tell what my speakers support (I don't seem any sound sources listed under the ZBASE specifications). I played around with the settings, and while the 5.1...