Missing transcript column when loading a local dataset with "audiofolder"
First bad commit 5c8869f8c36dbc8c8d423030b7b7c4fd64f8c729

EDIT: This is not a bug or a regression. It was a breaking change introduced in the commit I mentioned and was also documented in there. The docs state how to handle this now, see https://huggingface.co/docs/datasets/main/en/audio_load#audiofolder-with-metadata

or simply, move your metadata into the splits folder and update the paths, in your case this would look like this:
```bash
my_dataset/
  - data/
    - test/
      - 54db8760de3cfbff3c8a36a36b4d0f77_00390.0_04583.0.mp3
      - 54db8760de3cfbff3c8a36a36b4d0f77_04583.0_05730.0.mp3
      - metadata.jsonl
```

and the pahts in the jsonl should be relative to the metadata.json:
```bash
{"file_name": "54db8760de3cfbff3c8a36a36b4d0f77_00390.0_04583.0.mp3", "transcript": "Ata tudoù penaos e tro ar bed ?"}
{"file_name": "54db8760de3cfbff3c8a36a36b4d0f77_04583.0_05730.0.mp3", "transcript": "Ur gwir blijadur eo adkavout ac'hanoc'h hiziv."}
...
```

So I think this can be closed. Thank you for your quick answer !
I'm sorry I missed that in the documentation.
Everything works fine again after following your recommendations.
I'm closing the issue.
### Describe the bug

My local dataset is not properly loaded when using `load_dataset("audiofolder", data_dir="my_dataset")` with a `jsonl` metadata file.
Only the `audio` column is read while the `transcript` column is not.

The last tested `datasets` version where the behavior was still correct is 2.18.0.

### Steps to reproduce the bug

Dataset directory structure:
```
my_dataset/
  - data/
    - test/
      - 54db8760de3cfbff3c8a36a36b4d0f77_00390.0_04583.0.mp3
      - 54db8760de3cfbff3c8a36a36b4d0f77_04583.0_05730.0.mp3
      - ...
  - metadata.jsonl
```

`metadata.jsonl` file content:
```
{"file_name": "data/test/54db8760de3cfbff3c8a36a36b4d0f77_00390.0_04583.0.mp3", "transcript": "Ata tudoù penaos e tro ar bed ?"}
{"file_name": "data/test/54db8760de3cfbff3c8a36a36b4d0f77_04583.0_05730.0.mp3", "transcript": "Ur gwir blijadur eo adkavout ac'hanoc'h hiziv."}
...
```
```python3
my_dataset = load_dataset("audiofolder", data_dir="my_dataset")

print(my_dataset)

'''
DatasetDict({
    test: Dataset({
        features: ['audio'],
        num_rows: 347
    })
})
'''

print(my_dataset['test'][0])

'''
{'audio': <datasets.features._torchcodec.AudioDecoder object at 0x75ffcd172510>}
'''
```

### Expected behavior

Being able to access the `transcript` column in the loaded dataset.

### Environment info

- `datasets` version: 4.4.1
- Platform: Linux-6.5.0-45-generic-x86_64-with-glibc2.39
- Python version: 3.13.9
- `huggingface_hub` version: 1.1.2
- PyArrow version: 22.0.0
- Pandas version: 2.3.3
- `fsspec` version: 2025.10.0

Note: same issue with `datasets` v3.6.0