Anybody who has the pioneer xd rx win 7/8 64 bit issue,the driver has not security verified or something simiar to this effect " audio driver error". The simplest way i got round the problem was as i booted up my pc i kept pressing f8 until it came up to safe made option screen and navigated my way to the 2nd from bottom and choose"disable driver signature enforcement windows 7".let it boot as normal and jobs a good un. It took me ages to figure this out so im jusdt passing on the knowledge in case any one else suffers the same problem!!