SoundSystem problems

I am just looking into paulscode Soundsystem:

I tried to position a sound by calling setPosition().
But when using OpenAL, this has no effect at all (sound stays centered), whereas JavaSound correctly moves my sound to the side, but only plays it once…
Same code base for both plugins. What do I miss ? Btw, what is the relation to the given position coordinates ?

Another question:
Say, if 10 entities should get their gun fire sound based on the same audio file, do I need call newSource() for each sprite and handle the sources by myself ?

In OpenAL the sound has to be mono for setPosition to work.

Thanks, that does the trick.