We're two complete noobs at cars and AUX cables, but we have a 2008 VW Polo which has a cd player but no AUX port to listen to music from an external device (like our iPhones). We have bought a AUX kit off the internet but after plugging it in it didn't work. The car had an existing iPod connector
(the blue plug in this picture (out of its' socket)
)
but this didn't seem to work, so we replaced it with the AUX kit off the internet. But this didn't work either, then re-reading the instructions we found out that we were meant to be replacing the cd plug, however, this plug doesn't seem to come out, and also doesn't seem to match the plug from AUX kit.
The ports on the back of the CD player look like this:

Do you know where we have to plug in the kit? (which looks like this:
)
Any help would be much appreciated! We don't really understand what to do and the instructions are pretty vague, thanks for you help!