Windows Media Player is made by Microsoft and is capable of burning DVD audio. It is free and very easy to download and use. It can also be used to watch videos and play music.
You need a CD-burning software.
There are several places to get free audio editing software. One of the most popular is Microsoft. They offer any number of choices for the do it yourselfer.
Skype has good audio conferencing. You should also look into Microsoft's audio conferencing software. I believe they are the best.
The audio and video files will be unaffected only the application software is updated to the latest version.
Most CD burning software will burn .wav files to CDDA (CD Digital Audio). Nero, Roxio, etc, you just need to burn the files in 'audio' mode. For good free burning software that will burn .wav to CDDA (and most other audio file types) try 'burrrn' http://www.burrrn.net/?page_id=6
Technical software is a field that has been tapped into by many companies. Microsoft and Apple are two of the most popular known applications and software companies that produce and design programs.
Use cd-burning software compatible with the .kar extension, to burn an audio cd. If this software is not availible, use a file-conversion program to convert it to another format (.wma, .mp3, .ogg or .m4a are more conventional formats), and then use a cd-burning program to burn an audio cd. Note that a cd-burner and software are required.
Windows Media Player, iTunes or any CD burning software can do this
Tricky... but doable. I am not familiar with any solution from Microsoft. But, you can install SoliCall Pro. This software product uses a virtual audio device that allows it to record the audio.
Your CD burning software should have an option to burn an actual audio disc rather than a data disc for a computer, containing audio files.
Microsoft's audio file type is .wma (Windows Media Audio). However most Microsoft platforms will support other popular types of audio files.
All Audio software and utilities are not free but there are some reliable downloads that are completely free. They include converters, midi, notation, CD burning, label makers and midi converters.