Amundsen + DAB head unit is a fan of Coldplay

Anyone had a problem with their amundsen forgetting what it should be playing on occasion. The wife is getting freeked out that when she gets in the car on a monday afternoon on her own it always plays Coldplay and the same song everytime. I thought it was coinsidence to start with but it happens to frequently for this to be the case. Basically she listens to Capital or some rubbish on the DAB radio and when i have the car at the weekend i normally listen to xfm also DAB. All week it behaves normally however when she drives to her friends house on a Monday Afternoon the unit strangely jumps to a coldplay track when she starts the car. The track in question is on a 4GB SD card with hundereds of other songs. Neither of us are Coldplay fans well not since parachutes album anyway. We just can't get our head why this is happening. Any ideas? has anyone else experienced similar?

Regards

Scribbler