add new sound LISTEN TO SOUNDS BY CITY: aarhus, albany, new york, aluksne, amman, amsterdam, bamako, bangkok, barcelona, beijing, belo horizonte, bergen, berlin, bilbao, birmingham, blandford forum, bogota, bordeaux, bristol, brussels, budapest, buenos aires, cagliari, cairo, camberwell, caracas, catania, champaign, chicago, cork, dakar, dalian, den haag, dresden, ekaterinburg, esquerdes, fuzhou, genzano di roma, gothenburg, granada, graz, halifax nova scotia , hamburg, helsinki, hong kong, istanbul, kobe, kyiv, la laguna, lisboa, liverpool, ljubiana, london, los angeles, marseille, melbourne, mexico, montevideo, munich, nairobi, napoli, new delhi, new york, paris, pavia, perugia, portland, porto, prague, rabat, rio de janeiro, roma, rotterdam, salzburg, san francisco, san sebastian, sao paulo, seattle, seoul, shanghai, shanxi, stuttgart, suzhou, taipei, tel-aviv, thessaloniki, tokyo, toronto, toulouse, trieste, uhtrect, ulm, venezia, vienna, wroclaw, yogyakarta LISTEN TO SOUNDS BY MOOD: ambient, atmosphere, beat, birds, boredom, churches, industrial, mechanical, music, noisy, people, rythm, sirens, speaking, traffic, travel, voices, weather