I've just done a search on this and haven't found anything like it.
Does anyone know if an iTrip to blackberry adapter exists?
I use my iTrip to transmit to my radio when using my iPod.
If I want to use my BB instead then surely a cable exists to connect my BB to the iPod connector on the iTrip.
If not, there's an opportunity for someone to make one.
What do others think?:D