Copy missing reference files for P.800 preliminaries

        for item in exp_cfg["preliminaries"]:

            cat = item["category"]

            cond = item["label"]

            # need to copy the reference files for every condition as well

            conds = ["c01", item["label"]]

            # Find the condition folder in proc_output

            for proc_out in proc_out_list:

                src = proc_out / f"{cat}*" / f"out_{LOUDNESS_MAP[cat]}LKFS" / cond

                for cond in conds:

                    src = proc_out / f"{cat}*" / f"out_{LOUDNESS_MAP[cat]}LKFS" / cond / "*s07.c*.wav"

                for file in glob.glob(str(src / "*s07.c*.wav")):

                    for file in glob.glob(str(src), recursive=True):

                        print(f"  Copying {file} -> {out_dir}")

                    if (out_dir / Path(file).name).is_file():

                        filename = Path(file).name

                        if (out_dir / filename).is_file():

                            if cond != "c01":

                                raise FileExistsError(

                                    f"File {file} already exists in {out_dir}"

                                )

                            else:

                                print(f"    c01 condition already copied, skipping: {filename}")

                        shutil.copy(file, out_dir)