I have a number of custom ringtones made from various sources- some made with GarageBand, some purchased. In IOS 5, there is an option to use custom SMS tones for individuals in your Contacts, but only some of my tones are showing. There seems to be no rhyme or reason to which tones show and which ones don't. It's not based on size of the file, the length of the tone, the name or source. I've tried to figure this out with no success Anyone with suggestions? Thanks!