Tracks Rotation SQL Query: Load five songs from the requests table

This bit of code should populate the playlist with five songs that have appeared in the requests table, randomly, and obey the settings for the track/artist repeat rules:

SELECT songs.ID, songs.artist, songs.title FROM songs
LEFT JOIN requests ON songs.ID= requests.songID
LEFT JOIN queuelist ON songs.ID = queuelist.songID OR songs.artist = queuelist.artist
WHERE songs.enabled=1
AND ((start_date <= Now()) AND (end_date >= NOW() OR `end_date` = '2002-01-01 00:00:01'))
AND (TIMESTAMPDIFF(MINUTE, date_played, NOW())>$TrackRepeatInterval$ AND TIMESTAMPDIFF(MINUTE, artist_played, NOW())>$ArtistRepeatInterval$)
AND (queuelist.songID IS NULL OR queuelist.artist IS NULL)
AND songs.ID= requests.songID
AND songs.song_type=0
ORDER BY RAND() DESC LIMIT 5;