Apple iTunes M4P DRM Help (Audiobook)

Hello all!

I am driving across Europe next week, and I usually take Audio Books with me. This time around, I have decided on Bill Bryson's latest audio book, which I bought via iTunes. All legitimate, etc. I was hoping that I could gu these files to an MP3 CD and play them in my car's thingie...

Tus out, that doesn't work...

Having invested in this, and quite keen to listen to the audio book and not listen to the car engine for 2000 miles, is there any way I can make this work? I fear at this stage, I'm going to have to use a Mac to play into audio my Linux box.

As an electronics engineer, please don't make me do this! There must be a way! This must be do-able! I have also tried a couple of DRM removers on Windows with no success!

Cheers all,
George