You can call Mike's attention to it by emailing him (
mike@behindthename.com), or by PM'ing him (
http://www.behindthename.com/privatemessages/compose.php?user=1). He's the one who maintains the database, and he does updates fairly frequently but not on a specific schedule. It can't hurt if you include any outside references for the information you want changed (books, websites, etc that show or discuss the pronunciation).
- mirfak