Kohana has a send_file function. That function does a good job on splitting large files and sending correct mime types.
@see http://kohanaframework.org/3.3/guide-api/Response#send_file
Your code should be:
class Controller_GetSound extends Controller {
public function action_index() {
$this->response->send_file('multimedia/pronounciation/265.mp3',TRUE,array(
'mime_type' => 'audio/mpeg',
))
}
}
You actually don't really need to set the mime_type. Kohana will find the correct mime_type for your.