[LAU] Linux automatic startup question

Hi, I'm getting my Pianoteq app to run automatically when I start my computer. So far, I'm using the startup script in QjackCtl to run the commands I need. I have QjackCtl configured to startup automatically. It's starting up and running the commands OK; I see the programs come up when I boot the computer. But one thing is not working: a shell script named crossover_3chan, that invokes the ecasound application, which I'm using for a 3 channel speaker crossover network. This crossover_3chan script works fine when I run it manually, but for some reason, running it within the QjactCtl startup script is not working. When I execute ps -aux and look at the processes, it's not there, until I run it manually. Here is the QjactCtl startup script I'm using: #!/bin/sh sleep 2 /usr/bin/a2jmidid -e & sleep 2 /usr/bin/aloop-daemon & sleep 2 export LADSPA_PATH=/usr/local/lib/ladspa:/usr/lib/ladspa sleep 2 hdspmixer & sleep 2 "/home/gibbyj/Pianoteq/Pianoteq 5/i386/Pianoteq 5" & sleep 4 crossover_3chan & I've tried various ways of invoking the crossover_3chan shell script. Currently, I have put the script into /usr/local/bin, which is why there's no path in front of the name, above. But I also tried something like "/home/gibbyj/Downloads/crossover_3chan" & in the startup script, which didn't work either. Would it help if I make this shell script an "application", giving it a name, like Pianoteq and the other applications? I've tried to figure out how to do that, in AVL/Debian, but am still not sure how. Thanks very much for someone's help! John