How to play sound in opera mobile and opera 10.10 for linux?

How to play sound in opera mobile and opera 10.10 for linux?

http://dev.opera.com/articles/view/everything-you-need-to-know-about-html5-video-and-audio/

Opera desktop version 10.10 deb package for Linux Mint 8
The audio tag gives me audio not supported, the scripted way is the same:
this.audioElement = document.createElement('audio');
!this.audioElement.canPlayType // false in Opera desktop and mobile version

So try the Audio object:
this.audio = new Audio("hsk1/1east.wav");
this.audio.play();
Never plays anything no error (works in firefox)

this.audio = new Audio("hsk1/1east.wav");
this.audio.play();
this.audio.onload = function () {
myCourse.audio.play();
};
Never plays anything no error (works in firefox)

this.audio = new Audio();
results in an error:
Unhandled exception: [Object InternalException]
name: Error
message: WRONG_ARGUMENTS_ERR
stacktrace: Line 2 of linked script In function course
this.audio = new Audio();

Opera mobile for linux: (emulator to debug)

this.audio = new Audio("hsk1/1east.wav");
Error:
name: ReferenceError
message: Statement on line 2: Undefined variable: Audio
Both audio tag and scripted version not supported.
Tried with ogg files with the same result.

I love the debug methods for opera mobile and opera but sadly needed to use it a lot. Like firebug better for debugging but can't debug opera mobile with that.

So what opera version is the article talking about? What can I do to support playing short audio files in the browser?

Is this forum dead or something? Well I tried the embed tag and got sound on opera on my desktop. Nothing on my windows mobile. There is a box with the text "Plug-in content". How do I find the plugins installed and how do I install others?

Strange I cannot find any info on this for opera mobile.