Yeah, I'd say now that you know about the little round eject button, I'd try a few different DVD's in the drive. I remember for example that the 'Men in Black' special edition held the caveat on the back (in tiny writing) 'May not work on a Macintosh. I've seen about four or five examples so far of DVD's that say they won't work on a Mac, but that's four or five out of how many billion? Everything I've played so far on my Mac's has worked fine. If you're still having problems then I would trash the DVD player preferences and restart the iBook. Other than that I would go into Extensions Manager (assuming you're still using OS9) and check out what version of the DVD player you have. There's a good chance you can update it with a quick download from Apple.