diff --git a/RA3MP3Playback.pyw b/RA3MP3Playback.pyw
index 5aed971..e20922a 100644
--- a/RA3MP3Playback.pyw
+++ b/RA3MP3Playback.pyw
@@ -647,12 +647,23 @@ def game_launch(gameargs):
     else:
         master_fd, slave_fd = pty.openpty()
 
+        # Close all file descriptors except the pty
+        # This prevents inheritance of file manager's stdin/stdout
+        max_fd = 1024  # Reasonable upper limit
+        for fd in range(3, max_fd):
+            try:
+                os.close(fd)
+            except OSError:
+                pass
+
         pty_proc = subprocess.Popen(
             [game_exe, "+set", "ttycon", "1"] + gameargs,
             stdin=slave_fd,
             stdout=slave_fd,
             stderr=slave_fd,
-            close_fds=True
+            close_fds=True,
+            # Don't let the child process be affected by parent's terminal
+            preexec_fn=os.setsid if hasattr(os, 'setsid') else None
         )
 
         os.close(slave_fd)