I recently added the ACM to my '09 XJR and have been very happy. The audio quality is excellent and it is a godsend to have Pandora in the car for commuting.

However, I am having one issue when in the USB mode. Between almost every track (wav files arranged in 5 folders) there is a piercing "digital" pop sound- a very high pitched screeching blip.

It occurs whether the controls are set to mix or sequential. It does not occur if I manually jump to the next track, only when one track ends and another starts.

Anyone else had this issue with a USB thumb drive and the ACM?