Get the "kids of today" to vote for their favourite songs of the year, compile a selection of them onto two CDs and sell it for $23.

That's 43 tracks for $23 = 0.535 cents per song.

Or, for whatever reason, buy the single disc version for $20. 20 tracks, 20 songs, $1 each.

Includes a real physical product that will last forever, cover art, no DRM, uncompressed. It requires no software to play it and is trivial to convert to MP3 for your iPod.

Or, you could buy some of the tracks on iTunes for $1.69 each. But you can't convert them to anything else. And they're compressed. And if your computer crashed you've lost them. Sure, you could burn them to CD, but CDr last about a quarter of the time a real CD lasts, assuming you really look after them. Oh yeah, and no cover art. And nothing you could on sell second-hand. Nothing.

Have fun!

Funnily enough, Triple J's Hottest 100 Volume 15 has outsold every other release four-fold. But compilations don't count in the ARIA charts...