I'm trying to get it so when you click on Switch_CD it takes away all the songs that are on the cd you are listening to(that works)
and so it puts the verbs of the cds you have back up since it takes them off when you click on a cd(that doesn't work)
From this I know the part that is messed up is the var/obj/music things, how could I fix this?????

obj/music/cds
verb
Switch_CD()
set category = "Music"
usr.verbs -= /obj/music/tracks/verb/Blink_182_Adams_song
//there is a MUCH longer list than just this in the actual code

var/obj/music/alternative/A
if(A in usr.contents)
usr.verbs += /obj/music/cds/verb/Alternative_Mix

var/obj/music/sample_CD/S
if(S in usr.contents)
usr.verbs += /obj/music/cds/verb/Sample_CD