You can use paint or adobe photoshop to make a menu screen.
Crab Droid thing, well, you'd have to make a video or something, that's actually pretty complex and hard if you aren't good at that stuff.
Trigger Zones make things happen in your game using scripts, such as NPC Talking, here is an example:
desc = game conversation
;walk up to an character and he will display three messages in a row.
;Triggers
:state=0:hudreset,hudx=50,hudy=50,hudimagefine= [path to your image with text1] ,hudname=talk1,hudhide=1,hudmake=display
:state=0:hudreset,hudx=50,hudy=50,hudimagefine=[path to your image with text2],hudname=talk2,hudhide=1,hudmake=display
:state=0:hudreset,hudx=50,hudy=50,hudimagefine=[path to your image with text3],hudname=talk3,hudhide=1,hudmake=display,state=10
:state=10,plrdistwithin=160:rotatetoplr
:state=10,plrdistwithin=60:rotatetoplr,sound=[path to a sound] ,timerstart,state=20
:state=20,plrdistwithin=60:rotatetoplr,hudshow=talk1,hudfadeout=talk1
:state=20,timergreater=7500:state=20,rotatetoplr,sound=[path to a sound],timerstart,state=30
:state=30,plrdistwithin=60:rotatetoplr,hudshow=talk2,hudfadeout=talk2
:state=30,timergreater=7500:state=30,rotatetoplr,sound=[path to a sound],timerstart,state=40
:state=40,plrdistwithin=60:rotatetoplr,hudshow=talk3,hudfadeout=talk3
:state=40,timergreater=7500:timerstart,state=2
:state=2,plrdistfurther=60:state=10
You just save this script in notepad as an fpi, for example:
NPCTALKscript.fpi, and it's instantly ready for you in FPSC, you just put in a trigger zone, (next to a character in this case),
and search for NPCTALKscript.fpi in the scripts in the properties screen, and Ta-Dah, npc's can talk to you, or whatever you want to do, you just need the right script.
For music, you'd have to use a recorder or sequencer or look for some stuff online that you can use without getting in trouble with the copyright laws. Appearantly your doing a Star Wars game, you'd probably have to record some Star Wars music or play it on a piano or something and record it, because Star Wars music is probably going to be copyrighted.
I'm not sure if these are the answers you were looking for, but I hope I helped you in some way.
Credit to Benjamin Aeilkema for code snippet. He has a thread in the forums with more code snippets.
"Does anyone know my girlfriends cell number, I forgot it,
oh wait a minute, I don't have a girlfriend."
-Troy Chambers