I wanted to like this book - mostly because I really needed a book covering some of the problems I was having with DirectShow. The company I work for has DirectShow as the core component of their customer-facing software. I wasn't brought in to work on that part of it, but it quickly fell under my umbrella. I had no DirectShow experience, so I turned to the SDK docs and looked for a few books.
Well I have to say that if it wasn't for the SDK docs I would have been sunk. Both this book and Programming Direct Show have been real losers. This is better than the other book, but that isn't saying much.
Like previous posters I was disappointed by the audio. I have to support file playback, streaming, and control of a tv card through my interface. Its not rocket science, but the dearth of material on controlling tv cards in this book made it all but useless to me. The same material exists in the same form on MS DirectShow docs - the author added next to nothing.
I did give it 2 stars because sometimes it is nice to have the SDK documentation - with a little extra - to read when you are away from the computer. The author however should be ashamed for putting out such a cut-n-paste effort, pathetic.