Hello, thanks THAC i have managed to make jack run smooth enough to take a step beyond mere experimenting with audio on Linux. I got muse 0.6 , ams, ZynaddSubFX and ardour Beta running ok but i miss a Sampler/Drummachine, since i fail to compile hydrogene i would be very thankfull for any hint towards Mandrake 9.1 - RPMs containing some Softsampler / Drumbox that can be jacked. best regards