Hi,
Don't know whether this is possible; but it'd be great
if I could use my laptop's microphone and loudspeakers
to make voice calls with my cellphone. I often use the
laptop without having my cellphone near; if it goes
off, I always have to scramble to get it.
Another use case where this might be interesting is in
software such as Asterisk (http://www.asterisk.org), to
allow calls to be made through a mobile phone if that
is less expensive. When I first learned about your
project, I was thrilled -- it exists! -- only to find
out one split-second later that this is the 'wrong' way
around.