The BBC asked their listeners in a radio programme called “Save Our Sounds” to upload sound recordings from where they live in order to create an audio map of the world. This idea is indeed not new and there are some collaborative sound mapping projects around for quite some time. One I’m particularly fond of is the dutch site Sound Transit where you can “book” a transit from one place to another via a third one and then listen to the three field recordings mixed into one single file. I have added a couple of recordings to the vast library and you can find sound bits of many more artists on their beautiful site. Another mashup-way of sound mapping is bringing sounds recorded at a specific location onto Google Maps. Good examples are aporee.org and many other site covering a certain area of city like New York, Montreal, Chicago or London. A sound and video map of Kwung Tong, part of urban Hong Kong and under threat of large urban renewal plans, documents the cultural heritage of their unique community. Finally, the British Library has recently made their sound archive available, more than 25.000 recordings of music, spoken word, and human and natural environments can be examined by everyone. Not a sound map in the first place, the user can nevertheless browse through varios archives with the help of interactive maps.