My batch script worked 2 days ago, doesnt work now. No changes done.

for %%a in ("*.wav") do spleeter separate -p spleeter:2stems -i "%%a" -o output
Now it just shows the text 50-60 times and quits.
How can that be?

The issue names only the Windows batch command and the `spleeter` CLI entry point; start by running it in the same directory and capturing the repeated output and exit status. Compare the current behavior with the expected `output` directory and determine what changed. Done means the command processes each `.wav` file or reports a clear, actionable failure.

Written by the indexing model from the issue text.