I recorded this sketch on a multi-track recorder and played around with reverb to get that “comedy club sound.” I found the Wookie sound effects online (I forget the link but it was an official Star Wars soundboard or something). I dropped the pitch of my voice doing Jabba a tad and found The Complete Wermo’s Guide to Huttese for help with the vocabulary.
I forget where I found the sound of C-WHAT-PO’s gyros, but I remember it was a long search. I think I bought something off of SoundSnap.com. For the Storm Troopers and C-WHAT-PO, I played around with a hi-pass filter and some distortion to make it have that “droid/helmet speaker” sound.
I edited the sketch on Garageband, but I never like how Garageband exports “songs.” The exported “song” never sounds right to me. So what I do is, play the sketch on Garageband and record the playback with Audio Hijack, which records a great CD quality .wav file.