I have been on such a quest for the music to the new BBC Digital Radio adverts and after thirty minutes of hunting found this at the BBC's own website:
http://www.bbc.co.uk/digitalradio/faqs/answer_01e.shtml
"What is the music used on the BBC TV DAB trails?
Many people have asked about the music used in the current BBC TV trails about DAB digital radio - so here are the details of the music - we hope you find this helpful:
GIRL
Track & Artist
Gone Forever - Ulrich Schnauss (runs throughout the trail)
Feel Good Hit of the Summer� - Queens of the Stone Age
People Say - The Meters
Lean Back - Terror Squad
We Got the Funk - Positive Force
Cold Light - Yeah Yeah Yeahs
Round 1 - Scientist
Cold Light - Yeah Yeah Yeahs (again)
Tilt Ya Head Back - Nelly & Christine Aguilera
CLASH
Track & Artist
Gone Forever - Ulrich Schnauss (runs throughout the trail)
Tilt Ya Head Back - Nelly & Christine Aguilera
Feel Good Hit of the Summer - Queens of the Stone Age
No Rain - Blind Melon"