Bluetooth retrofit - works - but no audio!

[bvli]

Hi there.

I have a problem with my retrofitted bluetooth system. I've tried several forums on the net - searched for months for a solution - and still - I have no audio from my ULF. I'd really appreciate some help, guidance or good advices.

The facts:
E46 325i Sedan from 10/2001 (2002 model) (EUR model - no phone prewiring, hence no SES)
ULF software version 11
Installed retrofit Kit No 84 64 0 153 221
No NAV.
BMW Business CD

The problem:
I do not have any audio out from the ulf. People can hear me but I can't hear anything. The music mutes - and the display in the radio shows "PHONE".

By coincidence I tried to reinstall my old BMW Business Cassette. And then - everything worked perfectly! I thought it might be the Business CD then - so I ordered a brand new from BMW. And still - when I install it - no audio out!

So - I guess the wiring is okay - as it works like a charm with the cassette. But then - what could be wrong?

I'd be really glad if you have any hints to what I might try, as I don't own any cassette tapes any more and going down trough europe without any other music than the radio isn't an option.

Thanks in advance!