Well, I spoke to DTS. Bounced around and nobody knew anyone that had anything to do with Neural Music, nor their acquisition. I finally got in touch with one guy who was willing to pull up their own website and confirm that they indeed own Neural and someone must know something. He said he would try to figure this out and get back to me.
I then called Pioneer and the tech wasn't aware NMD was sold, nor wasn't working. He did check it out and confirmed himself, but gave the same excuse that it's not their service. At that point I advised him of the DTS acquisition and mentioned that the former websites now redirects to DTS. I suggested that perhaps they moved the URL of the streams and a firmware upgrade might easily solve this. I got nothing but dead silence. I suggested that seeing this was a built-in feature that was part of our purchase deal, I would think they'd feel obligated to try and help. That I wanted to get this elevated and I wanted a senior person to get in touch with me.
I figure if DTS just moved the stream, that should be an easy enough firmware fix. If they mothballed it, I would think it wouldn't be that hard for Pioneer to replace NMD with Pandora which is present on the new SC-57's, that use virtually the same HMG.
I'll keep pushing and report back.