Hello All, I am trying to use multimedia timers for audio synchronization.I am trying to get event every 20 ms so that i can fill up the audio buffer for the driver to play.I wrote a test app to see how the multimedia timers work.I am trying to print the time intervals . when i start other applications on vista the timing interval gets affected.It shows 26, 45 ms etc even though it is set to 20ms. Pls let me know why its happening so if anybody have idea.Can we depend on multimedia timers for the events for the audio applications. Thanks Lokesh