You have your alias in the ON TEXT event. They have to be separate in order to work. In this case, it's a simple matter of a mis-placed bracket.

Code:
on *:TEXT:*Buzz*:%uno.channel:{  
  if ($did(AutoList,80).state == 1) splay -p UNOsndz/buzz.mp3 
  did -v AutoList 501 
  .timer 1 2 did -h AutoList 501
  dnudge AutoList 
}
;;; /dnudge <dialogname>
alias dnudge {
  var %nsound = sounds/buzz1.mp3
  ;-----------------------------------------------------
  ;1=target, 2=count, 3=x, 4=y, 5=ticks, 6=msec, 7=w, 8=h
  if ($1 == $null) return
  if ($2 == $null) {
    var %x = $iif($dialog($1).x < 0,0,$v1)
    var %y = $iif($dialog($1).y < 0,0,$v1)
    var %w = $dialog($1).cw, %h = $dialog($dname).ch
    .timer -m 1 1 dnudge $1 0 %x %y $ticks 750 %w %h
    if ($exists(%nsound)) splay $qt(%nsound)
    return 
  }
  if (!$dialog($1)) return
  var %x = $3, %y = $4, %o = 4
  if ($calc($ticks - $5) > $6) { 
    dialog -s $1 %x %y $7 $8
    return
  }
  elseif ($2 == 0) { inc %x %o | inc %y %o }
  elseif ($2 == 1) { dec %x %o | inc %y %o }
  elseif ($2 == 2) { inc %x %o | dec %y %o }
  elseif ($2 == 3) { dec %x %o | dec %y %o }
  elseif ($2 == 4) { dec %x %o | inc %y %o }
  elseif ($2 == 5) { inc %x %o | dec %y %o }
  $+(.timer.AutoList.,$1) -m 1 30 dnudge $1 $calc(($2 + 1) % 6) $3-
  dialog -s $1 %x %y $7 $8
}