Manufacturing audio
Audio is incredibly important for creating a professional quality game. Unfortunately, it is often the most neglected element and the last to be implemented. One reason for this is the fact that we can play a game without the audio and still enjoy the experience. However, a good soundscape in a game will make it much more immersive and help improve user feedback.
In order to create audio we will need to use external software, as GameMaker: Studio does not come with any built-in audio creation tools. There are a range of software choices to choose from. For creating sound effects and music there are popular programs such as the very full featured Reason, http://www.propellerheads.se/, which emulates a rack of synthesizers, mixers, and other components. On the free side, there is BFXR , http://www.bfxr.net/, that allows you to create game sounds online and then there is also Sonant , http://sonantlive.bitsnbites.eu/, for making music. All these packages are fun and easy...