When dealing with audio in vvvv you have to choose between the nodes in the categories listed to the right.
All worlds have their advantages and drawbacks and they don’t interoperate.
This documentation covers DShow9 and Bass for you, it pre-dates VVVV.Audio, which does not yet have much documentation except its helppatches that come with the download.
Frankly speaking, vvvv is not focused on audio processing. For maximum flexibility in handling sound you'd probably want to get dirty with Pure Data.
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