Welcome to our community, Vick
There are actually a couple of ways you might accomplish this
goal.
1. Visit a Radio Shack or similar place and purchase a
splitter cable that allows connecting both the Speaker out and
Microphone to the Mike or Line In input.
2. Purchase an external mixer device that you would connect
the Speaker out and Mike to, then feed that back into the
Microphone or Line In input. Then set that input as the recording
channel for Captivate.
When I think about it, both are the same approach. You are
just using different hardware to accomplish the goal.
Cheers... Rick