Inline Recording Help

This week I experienced a hard drive failure which has caused me no small amount of grief as you can imagine as I try to recover my former configurations. The replacement hard drive now has Audacity 1.2.6 loaded, but I need to determine how to “get back” the drop down menu of “Microphone” and “Mixer” - I think this is what they said(?). In any case, I am using MS Windows XP as an operating system.

I’m trying to be able to hear or watch videos and record the associated sound (in-line… not through external speakers) while I listen through external speakers — then switch to using the studio mike that I use for recordings.

At this point, I don’t have a clue what to do. I using the following audio drivers:
– SigmaTel C-Major Audio
– Mobile pre by M-Audio
– Microsoft Sound Mapper - input

Can anyone offer any suggestions – please?

Bob Anderson