you just can't
go to your ds browser and go to search then type in home4dsi then tap search and then go to dsi tube then dsi tube again and then select a catogory then it should say down load dsi tube (or just watch youtube) thanks for reading!
Ttake video
There are a couple of things that you will need if you want to play videos on your DSI. You will have to install a Flashcart that is compatible with the DSI. You will also need Moonshell which is an application that will enable you to load the videos to your DSI. Once you have these two items, you will be able to watch videos.
you cant. the dsi web browser does not use flash so no you tube. Nintendo may come out with a new one
No because you would need Adobe flash player but in the DSi, you can't download anything. Try using home4dsi.net it has loads of watchable videos for your DSi.
you can't at all
It lets you on all websites, but sadly the Dsi would need a different upload to let you watch videos on it.
No
because there ISN'T any. maybe the 3ds might have it
The DSi and Dsi XL do not have support for watching movies in any form.
You can't
no it can't