Only one BT device at a time?
 

I have used an old iPod Nano in the X5 for years, connected via an AUX IN cable. My Blackberry connects via Bluetooth, and all works fine. However, I "inherited" my son's old iPod Touch after he got a new one for Christmas. This Touch has BT. Can I have both my Blackberry phone AND the iPod connected via BT in the X5 at the same time? Or am I limited to only one BT connection at a time?

You can pair up to 4 devices. Only one device can have an active handsfree connection at any one time.

The iPod touch does not contain a mobile phone, and would not be any use paired to your car. The audio support is not stereo (A2DP) in the car, it is mono low bitrate for voice use only (HFP).

Ah, so the cable connection via AUX IN is required for the iPod. Thanks!

Yep, wireless audio (A2DP) is coarsly compressed and clipped, and will make the already poor sound quality of an MP3 even worse. Oh and it wobbles in pitch while it's playing too as the signal changes. Avoid.