Thanks to the work of iPhone hackers, Mac users have had the ability to use custom ringtones for a few days. Now, thanks to the hard work of Nate True and Ziel, windows users can also use AAC or MP3 files as custom iPhone ringtones.
It’s also helpful to read the mac instructions, which give info you need if you want to change system sounds too, and people may be creating custom skins too.
It has been over 24 hours since the iPhone Dev hacking team announced that they had obtained full filesystem access to the iPhone. Since then, some intrepid iPhone users have pieced together the tools necessary to “break out of jail,” and place custom ringtones on the phone, but we are still awaiting an official release from the team that will reduce the amount of fiddling needed to get everything to work just right. At this point, the hack renders the iPhone unsyncable to iTunes until a system restore is run.