Limited income, a lower credit card penetration, and a greater willingness to download free music from P2P services, may be the reason why teens are less interested in music subscription services than young adults, according JupiterResearch.

According to Jupiter's survey, 31 per cent of young adults expressed an interest in subscription services. This compares to 17 per cent of adults and 19 per cent of teens.

Jupiter also found that younger adults are most likely to perform CD burning and file sharing. Among 18-24-year-olds, 41 per cent burn CDs, while just 14 per cent of over 25s do so. Similarly, 31 per cent of 18-24s use file sharing programs, but just 4 per cent of those over 25.

CDs rule

Older Internet users are less prepared to accept digital music. According to Jupiter this may be due to inexperience, mistrust or a preference for non-digital music.

According to the research, 51 per cent of online adults believe digital music is less valuable than physical music (on CDs).

JupiterResearch VP and senior analyst David Card told eMarketer: "CDs offer higher sound fidelity, aren't burdened with awkward copy protection and are compatible with pretty much every way people listen to music. MP3 players and portable rentals could turn around that value perception, but it will take time."

This perception could be set to change over the next few years. According to Forrester Research, by 2009 30 million US households will be using MP3 players. Currently that number stands at 7.6 million.