hoster lite 4.3 upgrade help

[ray ray]

am i correct im my reading that in 4.3 lite upgrade i will be able to let customers bring there disk and i can play the song from it in the past lite did not allow this nor did it have songbook i don't need songbook as i have kj rpo and am happy with it i have over 900 cdg disk loaded in hoster lite i'm running vista home preminum i have waited to try 4.0 till i saw it was vista ready please clear up for me the upgrades in lite from 3.21 to 4.0 and will i have to rebuild song base uninstall 3.21 before install 4.3 any help would be a blessing thanks ray ray