ok, i found the best way to fix it.

To solve the problem we have to run the "runLime.sh" file with Bash.

how to do it easly ?

editing the file itself doesn't work for me... and editing this file may be dangerous for non-expert users.

The question is, if the launcher is runLime.sh, what do we execute when we run the "limewire" command ?
response : /usr/bin/limewire

what is it in this file ??

"
#!/bin/bash
cd /usr/lib/LimeWire
sh ./runLime.sh
"

Nothing Else.
So this /usr/bin/limewire is just a link to execute /usr/lib/Limewire/runLime.sh
and we want to execute this runLime.sh with bash.

To do so, just remplace "sh ./runLime.sh" by "bash ./runLime.sh"

then, your /usr/bin/limewire file is :
"
#!/bin/bash
cd /usr/lib/LimeWire
bash ./runLime.sh
"

and it works fine

I don't think there is an easier way.