How to use jme with growing files ?

Hi I would like to use jme with growing files. The problem right now is when the user presses play, it only plays up to the length of the file when the user pressed the button.

Basically I would like the player to go on playing for a pre-set time (pausing/caching if it runs out of data) or until the user presses stop (whichever occurs first).

Any suggestions ?

Salsaman.