MIDlets have a lifecycle that is defined in the MIDP specification. MIDlets can be paused by events such as incoming phone calls. A well-behaved MIDlet releases important device resources when it is paused and reallocates or restarts those resources when the MIDlet is resumed. In the MMAPI arena, stop any Players that are rendering content when a MIDlet is paused.
The Java ME Platform SDK prints a message to the console if you pause a MIDlet and it does not stop its running Players. You can test this feature using the Pausing Audio Test MIDlet in the MobileMediaAPI demonstration application.
The warning message is printed only once for each running emulator.