How can I download free music from the internet to itunes on the iphone/ipad without using a mac/pc? There are loads of bands on the internet offering their music as free downloads on their websites. Either as zips or direct mp3 downloads. What ways are there for iphone/ipad users to get the music playable via itunes without taking the mac/pc detour and without jailbreacking?
There are no ways to download an .mp3 using only your iOS device for later use by the Music app on said iOS device.

You have two options:


Download music via the iTunes app on your iDevice.  
Download music on your Mac/PC and synchronize with your iDevice.