. Why did MP3 become controversial?
Later on, when people were using more and more of the MP3 files, then many companies decided that they wanted to stop this unfair means.
This is the reason why they blamed many of the MP3 converters and also files copyrighted, due to which many of them were shut down.
Due to this reason, many people use MP3 as a music piracy service and also for other things.
The MP3 files were first used in the portable media player, and then, later on, it was used in smartphones.
You can learn or even download the MP you like from the Mp3juices website.