Audio format being saved as video/webm

[cheresanford]

Hello @OvidijusParsiunas ! First off thanks for the great package! I'm running on a little issue though.
I've implemented the deep-chat component on my Vue 3 app, as follows:

<deep-chat
ref="deepChat"
style="width: 100%; height: 100%"
:audio=true
:connect="chatConnection"
:avatars="avatars"
:textInput="textInputStyle"
:submitButtonStyles="submitButtonStyles"
:messageStyles="messageStyles"
:requestInterceptor="requestInterceptor"
:microphone="microphoneStyles"
:history="chatHistory"
@message="formatSpecificMessage"
>

On my frontend request it seems like the audio format is fine, but when I save it on my back-end (running locally) even though the extension shows as .mp3, if I upload the downloaded file into a file type checking website, it shows video/webm:

Which is also why my request to transcribe the audio file to ChatGPT isn't working with the downloaded file.

On my server side, utilizing Golang, nothing seems odd and I'm testing it pretty straightforward:

func GenerateChatCompletion(c *gin.Context) {
isAudioMessage := false
audioTranscription := ""
// try to get formData files from the request
files, header, _ := c.Request.FormFile("files")
// if has files, save it and return the path
if files != nil {
isAudioMessage = true
fileName := header.Filename

	// print header content-type
	print("Content-Type: ", header.Header.Get("Content-Type"), "\n")

	// File path
	var filePath string
	if os.Getenv("AWS_LAMBDA_RUNTIME_API") == "" {
		// Save the file to ./files directory
		filePath = filepath.Join("./files", fileName)
		destFile, err := os.Create(filePath)
		if err != nil {
			c.JSON(500, gin.H{
				"error":   true,
				"data":    nil,
				"message": "Failed to create file: " + err.Error(),
				"code":    500,
			})
			return
		}
		defer destFile.Close()
		}

Program ends after that with the file saved, but with video/webm MIME type though.