Teenagers and young children searching and downloading the latest tunes over the Internet are being exposed to pornographic images and websites.
The popular Internet tool LimeWire is at the centre of the pornography scare.
Searching for Britney Spears and even children shows The Wiggles and HI-5 return explicit images, and links to child porn websites.
Detective Superintendent John Kerlatec, commander of the child protection and sex crimes squad, says police are seriously concerned about file-sharing programs like LimeWire and their capacity to expose children to inappropriate material.
"Police have previously received reports and conducted investigations into the receipt of this kind of material," he told News Ltd.
"We encourage parents whose children come across any form of child exploitation images, or other inappropriate material, to contact their nearest police station."
The download tool allows peer to peer sharing, making it easier to download illegally and harder to monitor files.
It follows a string of porn arrests, including a woman jailed for downloading more than 2,000 hardcore images from LimeWire.
