I just replaced my 650 because it thought the headset was always plugged in and i could not use the phone.

I often use audible to listen to books on tape though a headset
Now I am listening to an MP3 book with Ptunes. It seems like ptunes( and real player) will not play though the headset( with 2.5mm adaptor) Do I need a program like freedom?( i used to use on my 600)
Does Ptunes or Rplayer play though the headset on the 650?