Hey guys , I have a HU-803 in my S60 and I am naturally super satisfied!! But I would like to have a radio that can play Mp3 and has a USB port ! and the external solutions have not convinced me so much! I play with the idea to install a double DIN radio, now I have already read in several threads that it is not so easy since the radio takes over any other functions! Which are these and can you handle this???? Thank you in advance!! MFG Alex