>I’m using widget HTML in MobiOne
Clarification you are using the HTML5 <audio> element which may give you lots of problems based on the devices and platforms your app will run on.
MobiOne 2.5 includes an updated audio widget that we will assist you with support. If you use the html5 <audio> element then I recommend you start by learning everything you can about its implementation and issues on every platform you plan to support. Only then ask questions about its use; otherwise this topic will confuse all other readers.