Almost half of US teens use iTunes.

A new NPD report finds that most young people in the US aged between 9 and 14 years old are using paid music download services, though file-sharing networks also remain popular.

As reported by Billboard, 70 per cent of young people in the age group download music in any given month - and 49 per cent of young people use iTunes. 26 per cent use Limewire while 16 per cent download music from MySpace.

The report warns that parents don't appear to be supervising internet use on the part of their young charges, despite years of music industry litigation against individual file-sharers, including children.

The report urges the music industry to do more to popularise legal services, through pre-paid accounts and gift cards and legitimate ads-supported download sites.