Yes, iPhone and iTunes are buddies, very good; but when it comes to adding ringtones to your iPhone toy, iTunes will not let you, complaining about purchased MP3 content through the iTunes store. In other words you will not be able to add MP3 's to your iPhone if you did not purchase them through iTunes.

Well, not anymore, thanks to iToner, the software from Ambrosia Software gets the job done, without hassle.

iToner enables you to quickly transfer custom ringtones for your iPhone - without modifying, hacking or having&

Another annoyance for people coming from the Windows world:

Disk Order, coded by some genius people at LikeMac (http://www.likemac.ru/english) is the best file manager so far for OS X.

People like me, coming from the Windows world, are accustomed to using Total Commander (former Windows Commander) coded by another genius Christian Ghisler. This is basically a file manager with two panes but you get to do anything with it, it can even replace your daily Windows shell.