The cable to use is one with a stereo 3.5mm plug on either end. What are you currently using?
If it is indeed the correct cable, then check to see if it faulty by plugging one end into the DTxplorer, turn the Aux volume up full and touch the tip (just the tip) of the minijack on the other end. You should hear a bus in you left ear (providing you have your earphiones on the correct way round). Now touch the ring just below the tip (ond only the ring - use a pin or something similar in thin metal if necessary). You should hear a buzz only in your right ear.
If you hear what I describe then the cable and the Dtxplorer input are both OK (if you hear a buzz all the time then the cable has a faulty earth connection).
If the iPod output is stereo (check using your earphones) and your cable has the correct stereo plugs on either end, perhaps you are not pushing one end in far enough?
When reporting back, please give more information about what cable you have been using, including full description of the type of plugs it has, and the results of the test.
Thanks buddy, I just did what you said and found out that there must be a fault with my cable because sometimes I can hear both sides and sometimes none. So I have just bought this http://cgi.ebay.com/ws/eBayISAPI.dll...ht_3898wt_1232. Hope it doesnt fail me this time.
Thanks again Ray!