[Musicman247]

My guess on the "increasing ring" is that each instance of the ringtone gets increasingly louder, meaning that if you have a long ringtone (which wouldn't repeat) the sound level wouldn't change.

One way around this would be to edit the audio file itself using Audacity. Open the MP3, select all and then select Fade In. That should make the volume of the MP3 start extremely soft and slowly fade up through the song. You could also just select the first few seconds so the tone gets to full volume quicker.