Welcome tonsofpcs
The answers are: Yes, yes and yes.
1. Multiple instances of Stereo Tool is no problem, just start them.
2. Different settings is a bit tricky. During startup, Stereo Tool will look for a file stereo_tool.ini in the directory pointed to by environment variable USERPROFILE. (Type 'echo %USERPROFILE% in a DOS box to see the contents).
Now what you can do is write a small .bat or .cmd file in which you overrule the USERPROFILE environment variable, and then Stereo Tool will just look in the directory that you have specified.
Hint: If you want to control the CPU load on your system, and force each Stereo Tool instance to stay on a single core, you might also want to set NUMBER_OF_PROCESSORS to 1. (Not sure if that's a good idea though, I have never really tested the behavior of multiple instances at the same time).
For example, you could do the following:
- In C:\StStart\ , create 3 .cmd files for 3 different instances:
C:\StStart\a.cmd
Code:
set USERPROFILE=C:\StStart\A
"C:\Program Files (x86)\Stereo Tool\StereoTool.exe"
C:\StStart\b.cmd
Code:
set USERPROFILE=C:\StStart\B
"C:\Program Files (x86)\Stereo Tool\StereoTool.exe"
Then just make sure that those directories (A and B) exist, and it should work, and both instances should keep their settings. (I don't know if there's an easy way to get rid of the 2 DOS boxes that you'll get this way).
3. For automatic startup, just add the .cmd or .bat files that you created to the startup folder (under the Start menu).
I can imagine that you still have some questions (depending on whether you have experience with working with .cmd files - if you don't just let me know and I'll write a short how-to here).