Let me start with saying how much I hate iTunes and the way they are organizing the music. Maybe I am old fashioned, but I ripped all my CD collection and keep all my music in a neatly arranged folder structure. Something like Genres->Artist->Album. Many CDs were ripped years ago with various programs and many don’t contain all the mp3 tags so they’ll look really bad in iTunes. I was using dTunes for a while but the application wasn’t updated in more than two years and doesn’t work with the current firmware versions. What to do?
Before going into details, the solution offered here will only work if your iPhone/iPad/iPod is jailbroken. Thanks to mighty Apple, there is no file system access on a regular non jailbroken device so if you don’t like to get your hands dirty you are out of luck. That being said, if you want to play your mp3 folder structure there are two main methods: