Text to Speech in a web player build

I'm hoping to get text to speech working in a webplayer build using Unity Pro 3.3. I've seen the plugin on the forums and have that working in stand alone builds, but I'm trying just the most basic implementation for a webplayer: adding a .NET assembly (Interop.SpeechLib.dll) to my assets folder and attaching this script to a game object:

using UnityEngine;
using System.Collections;
using SpeechLib;

public class SkinTest : MonoBehaviour
{

    void OnGUI()
    {
        if (GUI.Button(new Rect(Screen.width/2, Screen.height/2,120,80),"Speak!")) {
            SpVoice voice = new SpVoice();
            voice.Speak("Hello World!", SpeechVoiceSpeakFlags.SVSFDefault);
        }

    }
}

It works in a stand alone Windows build, but not in a webplayer build. I guess this is as expected since I don't think the web player includes the assembly.

Is there any way to get text to speech working in a web player build?

Thanks

I wish we can deploy plug-ins webplayer builds but unfortunately, Unity does not allow it for security reasons.

http://unity3d.com/support/documentation/Manual/Plugins.html

Have you considered setting up your text to speech as a web service that your web build can access over HTTP? It’s a suggestion I haven’t tried myself but I just thought that might work.

You can try to use a web service like Google which will deliver you a mpeg file.
I dont know about sound loading in unity but I think you can do it.

test:
http://translate.google.com/translate_tts?tl=en&q=hello world!

If so this will work for MAC users too.