Twilio is unable to play .mp3 and .wav files - twilio

Question

Unfortunately, when I am using Twilio voice message, it does not play the message and some noise gets to play instead. I used the mime-types supported by Twilio, too.
var response = new VoiceResponse();
var call = Twilio.Rest.Api.V2010.Account.CallResource.Read(parentCallSid: callSid).ToList();
if (call[0].Status.ToString() == "in-progress")
{
VoiceMail voiceMail = voiceMailService.GetVoiceMailByVoiceMailId(voiceMailId);
if (voiceMail != null && !string.IsNullOrEmpty(voiceMail.RecordUrl))
{
response.Play(url: new Uri(voiceMail.RecordUrl));
response.Hangup();
}
Twilio.Rest.Api.V2010.Account.CallResource.Update(new Twilio.Rest.Api.V2010.Account.UpdateCallOptions(call[0].Sid) { Twiml = response.ToString() });
status = true;
can you please help

Answer 1

Twilio developer evangelist here.
From the comments, we established that you are creating audio files using the web's MediaRecorder API and trying to play those files back through Twilio.
The MediaRecorder API is only capable of creating webm files. Saving those files with a different mime type/extension does not convert them to that other format.
The Twilio <Play> element can only play files in the following formats: mp3, wav, aiff, gsm, and ulaw.
If you want to use the audio you record in the browser you will need to convert the webm files to one of those formats. You could do this in the browser with a site like Cloudconvert. That is not very scalable though, so you likely want to automate this conversion in your own code.
You could use a third party service, like Cloudinary, to perform these audio transformations. There is example code in the Cloudinary docs for this.
Alternatively you could convert these files on your own server. I am not a C# developer, so I can't give you a good example here. But you likely want to rely on an underlying media library, like ffmpeg or SoX. There are likely libraries to wrap these in C# and tutorials for how to use them, but I can't help any further with that.

Answer 2

Kindly use the method bellow
PHP laravel
use Twilio\TwiML\VoiceResponse;
$response = new VoiceResponse();
$response->play(http://www.yourwebsite.com/dir/welcome_mp3);
echo $response;
exit;
will return this code on your webhooks can play an mp3
<?xml version="1.0" encoding="UTF-8"?>
<Response>
<Play loop="10">https://api.twilio.com/cowbell.mp3</Play>
</Response>