First of all, many thanks for providing this excellent bridge to DirectX!

I am currently in the process of migrating a project from SlimDX, and in this process, I have encountered functional differences between the SlimDX WaveStream class and the SharpDX SoundStream class, which I think is due to an incorrect implementation in the SoundStream class.

As far as I can tell from the implementation of the SoundStream.Seek method, the start position of the data "chunk" (given by the field startPositionOfData) is ignored when calling the Seek method of the underlying Stream.

If I am not mistaken, for correctness line 302 should instead read:

return input.Seek(newPosition, SeekOrigin.Begin);