adding a file to itunes

i made a simple script that should add a song to itunes
it dose not work i need some help
this is the target_file “Volumes:Files:root:Desktop:test:Mr. Gecko mrgecko@verizon.net_So Good To Me (Norma).aif”

tell application "iTunes"
add target_file to playlist "Library" of source "Library"
end tell

it’s responded with

if you can also tell me how to select it two that will be good
please help

never mind i thought of something else


some Notes:
¢ The filename might be too long
¢ A HFS path starts with the name of the disk, not with the folder /Volumes
¢ the class of the file to be added should be alias