How to select my own ringtone

Hello everyone

I am transfering songs via my dropbox to I-phone because I don't have MAC and because I can't deal with ITunes interface. So when I upload a song to my dropbox and make it available offline, is there any way to select it as my ringtone?
If not could you suggest me something else?

Thangs in advance!

Forum: 

#1 Unique garage band and files

You need to hit one of your ringtones it safely FiOS like hearing it then hit save to iPhone and swipe it safe two garage band hit ad then you go to the garage ban it and go to live loops new loops files double tap and hold your files double tap drag end drop then you go to live in Port and then new hit the file again hit record and that should be thatd