Magical "twin cable"??? You mean the dual HDMI Panasonics? There were three model numbers... BDT300/350 the first year BDT310 http://www.ebay.com/itm/Panasonic-DMP-BDT350-Full-HD-3D-Blu-ray-Disc-Player-Consumer-Electronics-/121049439558?pt=DVD_Players_Recorders&hash=item1c2f1bdd46
There is another option... I'm not sure if Panny still makes any this year(never cared to check)... Last year they made some TWIN HDMI BD players to side-step the 1.3 issue. The trick will be finding one...they do exist though.
http://www.amazon.com/BIC-America-PL-89-Acoustech-Speakers/dp/B001VIXH7I/ref=sr_1_1?s=electronics&ie=UTF8&qid=1357093469&sr=1-1&keywords=BIC+pl89
Not a bad deal...considering what those cost new...but here is the center...