I thought it was French, but wasn't sure. She is definately beautiful though. Anyway, I'm quite pleased with your progress. When you finally get the software done and ready to sell these I'm definately buying one. My project (if I actually get it from paper to a proto board) will be using a different audio processor (TDA7433) and the same RDS/RBDS IC (so I won't have to bother with RDS functions in the firmware). The audio processor is a basic one, not one designed for car audio. So I'm using the TDA7040 MPX decoder for FM and an MC13020 C-QUAM decoder for AM. Both ICs will accept a mono audio signal, so all I'll need is two stereo inputs on the processor. The audio outputs will be buffered, and an amplifier will be required. Also a headphone amp will be included. My project will be more of a portable or home receiver than for a car, but that's where your's comes in.
Also, the 74LS05 i2c interface is really simple. I found a schematic here. What software are you using?
Philips told me the TEA6849 is obselete! No samples available. But since Microtune did the hard work, I won't need one. But thanks anmyway though. Now I just need a supplier for the MC13020.