[ecasound] Not getting it

I'm trying to replace the first few seconds of a wav file with
another few seconds (which might be slightly longer). Is there an interactive way
that I can use to do this -- alternatively activating the input for chain 1
(the patch file) as I listen, adn copying to the output file, then stopping the input for chain 1,
then activating the input for chain 2, just listening and not writing output until the moment
when I want concatenation?

This would seem a common editing request, right?

-- 
************************************************************************
*   Dave Serls                                 Littleton, CO, USA      *
*   dashs.denver.co.us                         dashs.com               *
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