[pip_pill]

I have looked everywhere and searched through the forums -
To make a long question short-
I have
BMW Z4 2003 Business CD HIFI- with DSP(checked in the trunk)/no Nav
I would like to
play ipod and charge+USB thumb drive+Aux 3.5 in - to the standard head unit
Car already has an Aux 3.5 added...
Any recommendations what adapter to add and where to get it from and what sort of quality is available
From the vin option on car are
S639A Preparation f mobile phone cpl. USA/CDN
S645A BMW US Radio
S662A Radio BMW Business CD
S677A HiFi System Professional DSP
S692A Preparation, BMW 6-CD changer I-bus
876A Radio frequency 315 MHz