How can I download library music in iPhone?

If you have an iPhone, that I hope you know how much this system depends on iTunes for everything. If you want to transfer some files that this is really a difficult task as each time you have to Synchronizing your phone to iTunes with the USB cable. iFile can help youwith that. It’s an application that lets youtransfer files from your system to the phone or vice versa over the air withouthaving to sync with iTunes. I don't use it myself, but it seems tocompletely cut out the need for iTunes. You just drag music onto your iPod fromexplorer and it is automatically put into the iPod app (or photos / videosetc.) Sounds cool. I just don't have a need for it. Might suit you though.