no need for external speakers, i already have that area covered by other means. however, i wouldn't mind investing in some really high quality headphones........or is that point moot as well if the 13" has a crappy soundcard??
really, i just want some decent sound (nothing that blows my pants off) when i watch movies i've ripped to my hard drive. i want to make sure it gets loud enough w/out distortion of any kind. if i'm looking for pure quality, then i guess i pop in some headphones, correct?
As the other replies have said, for basic movie watching, they're OK. I don't use mine for DVD's but regularly watch Youtube videos and listen to the odd song through them if I need to, and they can be pretty loud with very little distortion. At least they're definitely 'better' (IMO) than the Macbook speakers. In the end, it will all come down to your ears and your requirements. I know people who use the built in speakers on (cheap) computer monitors as their main audio output
Headphones are the 'best' price:quality audio output you can get. A $/£100 set of headphones could provide sound quality many times better than speakers of a similar price (albeit with a different 'experience'). The Macbook's sound card is perfectly fine for what you'll be using it for.