Oaklawn Park has launched a search for a new announcer after Pete Aiello was hired as the year-round race-caller at Gulfstream Park. Aiello spent his first season in Arkansas this year and came to Oaklawn from his home base of south Florida. Gulfstream announced Aiello’s hiring on Sunday. “Pete has resigned his position at Oaklawn, so we are searching for a new announcer,” said Jennifer Hoyt, a spokeswoman for Oaklawn. Hoyt said the track hopes to have a new voice in place by the end of August.