I'm not sure I agree with this research, but if it's true, then it's a bit depressing. A US survey conducted by the Pew Internet American Life Project has concluded that the internet does little to influence music buying decisions. Their report says: "The internet helps music buyers connect with artists and learn more about music, but it doesn't strongly influence what or how they buy. People are more likely to find out about music from traditional media or families, friends, or co-workers than from the internet".
83% of those surveyed said they discovered music via traditional media (ieTV and radio), 64% said they relied on tips from friends and family, while just 56% said the net played a role. When it came to actual buying decisions, offline sources had a bigger impact – 51% said the net had no role at all, while only 12% said it played a major role.
The survey also said that, despite declining sales around the world, music fans were still attached to CDs. 82% overall said most of their music purchases were CD, though that lessened to 69% with those under 36. The survey did admit that after buying music fans kept in touch with artists via the net – which could, arguably, have a role in future and other sales (like tickets and merchandise).