Yup, MoodLogic. I found out about it because it was mentioned in the Wall Street Journal review of the Riot, actualy. Not sure if sonic blue bundles a trial version or if the writer was just making leaps of logic.

I played with it a bit, but it wasn't worth whatever they wanted you to pay for the service from my point of view(some sort of subscription/token model i think, but i could be imagining that). I think the WSJ recomended it as a way to add ID3 tags to your mp3's, but I couldn't find a way to make it write ID3's with the trial version in the limited time I spent.

Matthew