As the Apple does not make their computer support the Blu-ray playback, you need third party tool to help. So an external Blu-ray drive is necessary. You can use the Samsung SE-506A. In addtion, you also need a Blu-ray Player Software like the Aurora Blu-ray Player, Macgo, DVDFab, etc.
If it has a Superdirve you can play a DVD but not a Blu-ray.
A DVD will play on the computer because the computers are made to play DVD's. The Xbox 360 will not play DVD's because they are made to only play BluRay discs.
A DVD player cannot play a BluRay disc. A BluRay player can play both BluRay discs and DVDs.
Yes, BluRay DVD players also play non Blu-Ray DVDs with no problem.
CD's, DVD's NO BLURAY
No
Yes
No and HD DVDs have been permanently discontinued
DVD players cannot play Bluray discs. The lasers and the data storage are different so no data can be read from a Bluray disc in a DVD drive. That is the case whether or not there is any up-scaling available in the player. Bluray players on the other hand are quite happy to play DVDs as well as Bluray discs.
DVD players and drives cannot handle Bluray discs, whether recording to them or reading from them. Bluray players and drives on the other hand can use DVD discs as well as Bluray discs.
Beacaus bluray is newer and they think everybody has a bluray player... eventually it will come on dvd.
To play a high definition DVD, you need a high definition DVD player. There are two types available currently. HD DVD, developed by Toshiba is one and BluRay, developed by Sony is the other. They are not compatible, so an HD DVD will not play on a BluRay player and a BluRay disc will not play on an HD DVD player. BluRay looks like it is the winner in the format war between the two companies over the last years so it is likely that Toshiba's format will disappear in the coming months. Note that HD DVD can refer to the Toshiba format but it can also refer to high definition DVDs in general.
Currently, no. You should get a PS3 to do that.