Play sound on internal speakers and possibility to use old xp api function?

After the release of windows vista the Windows Function Beep plays a beep on your connected speakers instead of the internal one.

Is there anyway to access the old function? Would it be possible by getting hold in an older windows api? Or is there any other way i can make this possible? If so i would like the ability to set both the frequency and duration.

I should mention that I´m actually targeting the windows xp platform.

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