[linux-audio-user] multiple simultaneous instances of xmms (or other graphical app) w/JACK?

[Rick Wright]

Hi all,

I would like to simultaneously play 2 audio files and mix their output 
via JACK.  I want a JACK solution because I also have BruteFIR in the 
workflow.  I can play a single instance of xmms through JACK without 
problem and I can open multiple instances of xmms without problem - once 
enabling that option.  Here's the hitch: when I try to play audio files 
with the two xmms instances, the first works fine, but the second gives 
an error complaining that it can't open the output device and to check 
that another program isn't blocking it.

I'm using xmms-jack-0.14 as the output from xmms into JACK, but it 
doesn't seem to handle multiple instances.  Am I correct and is there a 
workaround?  Is there another/better (lightweight w/GUI) jack-aware 
audio player that I could use instead of/in addition to xmms?  I'm 
primarily playing .mp3 & .wav audio files.

Distro is a fairly stock FC4 (with FC4 kernel slightly massaged & 
rebuilt to use realtime-lsm module)
JACK 0.100.6
QJackCtl 0.2.18

Thanks in advance,
Rick