Clio Mk4 Aux Port

Hi,



I have just purchased a new Clio Medianav with the R-Link system and I have been trying to connect my Ipod to the aux port, however I can't seem to select it as a source and when I go into the multimedia menu, the auxiliary selection is greyed out.



Has anyone experienced this/know how I can select the Aux source?



Thanks in advance for your help.