we know Ringo Pro have a built-in mp3 player, it means you can pay mp3 as ringtone without other mp3 player ( pTunes... etc)

i delete my pTunes , and Ringo do play mp3 as usual.

but, when i have pTunes and ringo both on my treo. When i was listening to music with pTunes and a i got the call, my pTunes playing the mp3 which is my ringtone. It's seems like pTunes handle the playing mp3 ringtone.

Does it means Ringo will use pTunes to play mp3 when their's a pTunes in my Treo ?