Sony CD-R Music Cd's works great when you want to download MP3 music to listen to in your car or home stereo.
No.
Ashampoo Burning studio is one of the best softwares.
Dvd+r
The best place for buying any software or technology is a store called Best Buy. This store offers the best prices to be found and has a wide selection of CD burning software in stock.
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.
Burning of a CD means that you laser write data onto the silver surface of the CD.
There is no difference- writing files to a CD involves using a LASER to leave marks on the CD that can be re-interpreted later on by another CD player. Because of the fact a laser is used, the term 'burning' has come into common use.
To combine two CD's together, you can create a new compilation CD by transferring the songs from both CDs onto a computer, arranging the tracks in the desired order, and then burning them onto a blank CD. You can use CD burning software to help with this process.
Unless you have a rewritable CD, then no, you can't.
These days almost every laptop, (including MacBooks), come with on-board software designed to burn CDs/DVDs, so if you are unsatisfied with what is included, then there are (of course) people willing to provide you with alternatives. Some of the best are reviewed and compared here: http://cd-burning-software-review.toptenreviews.com/mac-cd-burning-software/
An ISO file is an image of a CD. You can use CD burning tools (Nero is one of them, and there are some freeware ones out there) to write that image to a blank CD.
The best option is to purchase this software at your nearest media store. There you will get a certain service on how the software works and which one is the best. Look for the official websites of the CD and DVD burning software and compare the prices.