If quotes.txt has a lot of quotes, this will take a long time to send all quotes without flooding you off. 60 quotes will take 90 seconds. If you want it faster, use
dcc send -c $nick quotes.txt or dcc chat...
on *:TEXT:!quotelist*:#: {
if ($nick isop #) {
play -nq5m1 $nick quotes.txt 1500
}
}