There's plenty of iffy ways to get music on the web, but advertising-backed legal download services are often restricted to the US. Qtrax is a Silverlight-based service which is actually accessible in Australia, allowing you to download songs free of charge and play them back on your PC.

Further proof that we love MP3 and hate DRM: BigPond Music will stop selling music in the Windws Media Audio (WMA) format from April 1.

Audiophiles love FLAC files for their lossless fidelity, while Ogg and WMA files aren't widely supported. With free plug-ins, all three of those formats can be played and managed in iTunes.