Don't know what happened. But here's the gist of my longwinded reply.
1. You can use Safari on the iPod/iTouch to connect to RacksandTags.com. You can upload your Orange cd database to this. I used this extensively in the San Francisco and Berkley Amoebas a couple of weeks ago. (Great used cd places, by the way)
2. Andrei has spoken about an iTouch/iPhone app that will make use of RacksandTags, but it hasn't been created yet.
3. There is no app that uses the Orange database directly and Andrei has indicated a reluctance to develop one, principally I think because he worries about trying to keep multiple versions of the database in sync (I would have the same worry).