code: public JSONObject getAudioMediaFromPlaceId(String place_id) throws Exception {
  
  		List<SelectedColumn> selectFields = new Vector<SelectedColumn>();
  		selectFields.add( new SelectedColumn(SelectedColumn.Type.INTEGER, "id") );
  		selectFields.add( new SelectedColumn(SelectedColumn.Type.INTEGER, "place_id") );
  		selectFields.add( new SelectedColumn(SelectedColumn.Type.STRING, "filename") );
  		selectFields.add( new SelectedColumn(SelectedColumn.Type.STRING, "mimetype") );
  		selectFields.add( new SelectedColumn(SelectedColumn.Type.STRING, "title") );
  		
  		PreparedStatement stmt = connection.prepareStatement(
  				"SELECT id,place_id,filename,mimetype,title " +
  				"FROM contributions " +
  				"WHERE mimetype LIKE 'audio/%' AND place_id = ?;"
  				);
  		stmt.setInt(1, Integer.parseInt(place_id));
  		
  		JSONArray array = executeStatementToJson(stmt, selectFields);
  
  		JSONObject result = new JSONObject();
  		result.put("media", array);
  
  		return result;
  	}
docs: Finds and returns all audio media associated with a place id.
  @param place_id Id of associated place
  @return A JSON object containing all audio media
  @throws Exception