[ljudstråk] seems to be a nice urban-related project (carried out by studio 12-21):

[ljudstråk] is a library of audio walks, available to the public. These audio walks consist of young people's dull, mysterious, exciting and horrifying stories in the public space. They can be borrowed and bought as cd:s and downloaded from the internet so that the user can go out in the town and follow in the steps of these young people's stories.