Multimedia real-time sound?

[mrcoder]

MFC, Win9x, VC6 I have an app the uses a simple hand coded offscreen buffer to animated real-time graphics via the Multimedia timer. I now want to add real-time sound to the app. I want the sound to mimic a Geiger counter. The tone has a fixed frequency, volume and play time of 180ms. On the low end, the tone plays every 1 second. At the other extreme, the high end, the tone plays every 180ms in succession. It is key that a want to change the sound in real-time to match the animation. I tried using the PlaySound() function with a variable pause but the low end pause interrupts my real-time animation. Any ideas? I am surprised at the small amount a code samples and explanation a have found. I am not using DirectX. All suggestions welcome and code samples greatly appreciated!