Hello, I just solved this problem today, here is how :
1- install pure data via terminal (sudo apt-get install puredata)
-> pd0.49.0 came
2- launch Pd via console (puredata)
3- menu media/audio parameters
4- select in & out : bcm2835 Headphones (hardware)
===>>>> ususally I click "ok" and when I test audio Pd crashes <====
5- click "save all settings" or "enregistrer tous les réglages"
6- click "ok"
Pure Data stopped to crash when I tested audio.
I can NOT explain why.
I'm preparing a new SD card to reproduct this, and I'll keep you informed.