Like I stated in my post about online converting, there are a lot of different file types out on the internet, and this can cause trouble, especially when you download music for your mp3 player.This problem is there because most mp3 players don’t even support a common used extension as wma. So if you want to listen to those files on your mp3 player, you need to convert them to mp3. This is possible with some internet services, but these services won’t let you convert a large amount of files at once. This is where MediaCoder can help you. It can convert nearly every file type into nearly every file type, it can convert a lot of files at once, and most important: it’s free.