Yes, BluRay DVD players also play non Blu-Ray DVDs with no problem.
HD DVD and Bluray are both high definition disc formats but they were not only competitive formats but incompatible formats as well. While the battle for the HD market was in progress a handful of players were sold that would support both formats. These players were expensive and very few were ever sold. Unfortunately, HD DVD only players will not play Bluray and Bluray players will not play HD DVD discs. It is still worth keeping HD DVD players as they are the only players capable of HD DVD 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.
No and HD DVDs have been permanently discontinued
Yes, dvds can be played on bluray players.
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 audio is a digital format for delivering high quality sound to DVD's but not all DVD's players will play it. You have to check the box to see if it has it.
Yes
WMA or Windows Media Audio is the audio compression technology developed by Microsoft Corporation. WMA name is given to audio codecs and audio files which use WMA technologies for compression. WMA songs can be stored on CDs and DVDs for playback on PCs and CD/DVD players which support this format. Many of the portable audio players support WMA format playback in addition to MP3 and Real Audio file formats.
No, CD-players do not play DVD's. You have to use a DVD player.
Standard DVD players and Bluray players normally only have outputs. Therefore, it isn't possible to connect them together.
Bluray and HD DVD are the two trade names for high definition discs and players. Bluray is by far the better choice for the simple reason that HD DVD was withdrawn in 2009. Bluray had won the HD format war so HD DVD quietly left the stores. There are a number of HD DVD discs around as well as the players. As the two systems are in-compatible, don't trash your HD DVD player just yet. It will still do a do job of playing the HD DVD discs you still have.