How do you pitch change .mp3 in C++ and DirectShow ??


I'm using DirectShow to build a media player. I would like to pitch change .mp3 songs like you see in some DJ programs and you can do it in DirectShow by using IMediaSeeking::SetRate but it stops the filter graph.
How can you change the pitch while the file is playing??

Do you have to play the file using something other than DirectShow? If so, how else do you play them??

Thanks for any help.

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