Crass consumers will happily be taken up the tailpipe by their phone service providers when it comes to downloading the latest fad ringtones and wallpapers from Jamba/Jamster.
The rest of us, the discerning percentile of the human race, just use the default.
But FWIW, I modified my phone so it plays an assortment of torture sounds and screams when an incoming calls gets in; "New mail has arrived" in a demonic voice when I get new SMS or Email, and the "Posses" sound for notifications. Straight from the "Dungeon
Keeper - Windows 95 Plus! Themepack"
Anyone else have a nostalgia for mid/late 90s games and their obligatory desktop themes? Microsoft should bring them back.