Error: OpenAI doesn't like Telegram voice files?

Hi everyone! First post here. Just trying to implement some of what I've seen Nate build on my own self-hosted instance.

I'm trying to build a simple Telegram bot that transcribes my voice notes to myself. I have set up a simple workflow with a Telegram Message trigger, a Telegram Get File node, which then passes to an OpenAI Transcribe node. However, I'm getting the error:

Invalid file format. Supported formats: ['flac', 'm4a', 'mp3', 'mp4', 'mpeg', 'mpga', 'oga', 'ogg', 'wav', 'webm']

I see that the "Mime Type" for the binary output from the previous node is "application/octet-stream" which is probably what's throwing it off. Even though the file extension is ".mp3" it doesn't recognize the binary as an mp3 file.

What can I do? 🤔

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