I recently tried to change my gmails notification tone (the stock one is a fierce piercing shrill), so I used Mp3 Ringtone Maker to select a bit of music from one of my mp3s and saved that. But when i reopened gmail and went to look at the ringtone menu i saw that only a few select songs from my personal music were there (not including the one I wanted) along with the whole mess of unappealing stock jingles. I later downloaded Ringdroid and saw that only certain songs from my personal music were ringtone compatible (highlighted in green) although they are all mp3s. Does anyone know the logic behind this system and how to work with it to get what you want? By the way, I tried moving my selection to the "ringtone" folder on the sd card, but still no luck with it showing up. I also just saw earlier that there is a ringtone folder on the phones in-built memory (Nexus1), maybe I can move it there and it would show up?