Would anyone be able to explain to me how I can get the standard GlaDOS audio files that occur in portal so that I can implement them into my map? When I selected env_soundscape as an entity and tried to select a sound it said something about soundscape.txt and having to get files from hl2acript....whatever that means

Oh no, oh nonononono you're doing it wrong 'cus...
Doing it that way is malicious....

Don't use soundscapes for that.
Use Choreographic Scenes instead.

I will give a link for thee.
Try it for yourself and give feedback to me.

http://developer.valvesoftware.com/wiki/Making_GLaDOS_speak

(sorry, I'm poetic ATM because I finally have weekend)

Thankyou soo much for that tutorial, really easy and straight forward. Now all I have to do is find the file where GlaDOS counts down the cc release.