[linux-audio-user] Problem with qarecord and qjackctl

I'm trying to capture what I play with ZynAddSubFX and Hydrogen in a wav file. What I have done so far is start qjackctl for having jack running, then ZynAddSubFX and Hydrogen with the proper connection so everything sounds fine. Then I start qarecord but if I check the capture checkbox nothing appears on the level meters, but if I don't start jack I can see the meters moving and capture the sound coming from xmms in a wav file that plays fine. Is it that qarecord only works without jack? I think it should but I can't make it to appear in the connections window in qjackctl as I have seen in some tutorials, it shows in the MIDI section though as a writable client / input port. I'm pretty sure that's not what I need. I'm using qjackctl v. 0.2.0 and qarecord v. 0.0.8. All of them installed from THAC's RPM site for Mandrake 9.2. Any help would be greatly appreciated. Eduardo.