Guide fixes, esp. streaming audio (#5534)
* changes
* changes
* add changeset
* add changeset
* add requirements.txt
* req.txt
* guide fix
* backwards compat
* lint
* notebooks
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Co-authored-by: gradio-pr-bot <gradio-pr-bot@users.noreply.github.com>
Co-authored-by: Abubakar Abid <abubakar@huggingface.co>
