In a first discussion thread, I was looking for introspection to find and select outuput devices for a C++ DJ real-time-line with two output : main and headphone. Thanks for all your responses... I'm so looking to work with Asynchronous API ... (This is a new discussion thead about that.) ... but WAW ! It's so hard... :( 6 hours than I'm parsing "documentation" about... ? http://0pointer.de/lennart/projects/pulseaudio/doxygen/async.html ? What a ... ? :) Please, is there some example about using Asynchronous API ? So way about C++ class/objet wrapping ? I've start somethings but nothing to be show here yet... ?+, Serge S.