Sounds open up new ways of communicating around objects. They are often an experience greater than text; especially when it comes to using a mobile phone interface for navigating in exhibitions.
1) Sign up at https://www.thinglink.org and get yourself a free Thinglink account.
2) Add a thing (a design product, for example) to your personal portfolio. Say something about it (description), add an image and write a couple of keywords (tags) that best describle your work. Then add a sound file in mp3 file format (max 4 Mb in size). When you’re done, click submit.
3) Now your thing appears on your portfolio. Other people can now point to it, leave comments, and recommend your thing to a friend.