Yes i have checked msdn, but all there is is about visual basic or c++ and i wanted to do it by foxpro.
This is impossible to implement some VB/C++ ActiveX controls directly in VFP. Sometimes they need some wrapping. That is the reason I to create VB team, which make this changes

The reason for this is that i am building a hearing test via the computer which the user can do itself without having to go to the audiologist, to hear that there are no problems.

that's why i want to go directly through the sound system.
If you like my team can make a wrapper of DirectX control for you. If you need this send message directly to my e-mail: venelina@mnet.bg