Hope someone can help

I have the land rover audio connectivity module in my car. Normally used with the I-pod

I used the USB connection to play an MP3 and now the I-Pod connection doesnt work!

Reading the destructions it suggests that the box should decide which input to use - but it doesnt happen.

Have also tried reseting the box with a paper clip all no to avail.

Any ideas or is it a dealer job? -------------------------------------------------
2009 Range Rover Sport TDV6 XS S/way Grey
2001 Ferrari 550 Barchetta Blue
1991 Land Rover 90 Tdi Softop
1970 Fiat 124 Spider