armight29:

It doesn't work? Why not? You tell us what it should be doing, but not what it *is* doing or failing to do.

I'd try:

• Use the list form of system, rather than trying to pass it a string. The string form can be problematic when you're trying to handle quoting and such. I don't know anything about spumux, so I can't make any specific recommendations, but I'd hope it would have options for passing the input and output filename on the command like. If so, you might be able to do something like:
  

     my $inf = "/users/dragzonzero29/.wine/drive_c/mvtmp/$MM.MPG";
     ++$MM;
     my $outf = "/users/dragzonzero29/.wine/drive_c/mvtmp/$MM.MPG"; 
     system("spumux", "-s$i", "-m", "dvd",
            "-P", "/usrs/dragonzero29/.wine/drive_c/mvtmp/$subxmllist[$i
  +]",
            "--input-file", $inf, "--output-file", $outf);
  [download]

• Try replacing "spumux" with "echo" and see what's being printed out, to verify that you're getting what you're hoping for.

...roboticus

When your only tool is a hammer, all problems look like your thumb.