[MattyB]

Search is your friend... from the ICE wiki:

Originally Posted by FWH

Does the Civic has an AUX in, for connecting an mp3 player or similar?

No.

There is a Honda ipod adapter, which most people feel is expensive and limited in it´s functionality.
There are several aftermarket solutions:
Connecting an MP3 player - Civinfo Wiki

See also:
Various MP3/iPod/iPod Touch Input Solution Diagrams

They do not however show and id3 data on the in car screen.

You can of course also use an FM transmitter, although this does have limitations with regard to sound quality.
How To: install a radio transmitter for MP3 players

Good luck!
Matt
who used to live a few miles away from you in sunny Oakham!

PS - I am installing my Connects2 box this w/e, and will post any feedback I have to one of the Connects2 threads afterwards.