>> I guess summing audio samples is not the same as mixing them, right? > > That is exactly what the System Mixer is doing. I stand corrected ;-) > And it can be used in > applications. I mean you instantiate that node from the dormant nodes, > connect the nodes you need to mix, and plug the output of your private > system mixer to the global system mixer. There is an article on that, but I > need to google for the link... Mix-A-Lot, which indeed instantiate a private Mixer dormant node and connect its output to system mixer one : http://haiku-os.org/legacy-docs/benewsletter/Issue4-10.html Bye, Philippe.