Like you I'm after the same solution without the mic. I've previously used the BlueMusic selection in various formats - on an M44 which had the CD43 and in my E85 connected to the CD adapter behind the bulkhead. My current Z3 has the tape player (think it's C43) so I think I'm going to order this adapter from Germany - it looks identical to the other Bluemusic adapters I've had but specifically states it is compatible with the tape playerIt looks really good and I'm tempted, but not keen on installing an external mic.
Do you know if it can still do Bluetooth calls if the mic isn't plugged in, i.e. so the call still comes over the car speakers but it uses the phone mic instead?
Thanks!