The Internet is great for anyone who wants to work with audio in different forms and ways. You can find audio effects and music that are free to use. You can also easily store and distribute your own audio recordings. On the internet today there are a large number of web sites where you can listen to and download different types of audio for free. There may be audio effects that color the self-produced movie or a jingle that frames a podcast.
Audio files can also be used as a replacement for speech synthesis. Advantages of it may be that you recognize the voice and make it easier to listen to than speech synthesis. The teacher can, for example, create audio files with reading instructions or feedback to students. The student can record audio files and send to the teacher using a computer or mobile phone. Listening to an audio file makes it easier for students who find it hard to read written text and who find it hard to keep the focus.