Whaaaaaaaaaaaaaaaaaaaaaaaat?
One of the greatest advances in making our life easier, making us look brilliant, and increasing customer satisfaction, and you don't take advantage of it?
Yes, I know it can be a two edged sword, when customers start playing silly persons, to make you download silly tracks for the sake of it, but at the last few discos, I have downloaded special tracks for the client, which have made their night. All it takes is a smartphone, and/or tablet even if there's no venue wifi.
Why, even our esteemed Admin, North of the Border felt moved to download a track ( Perry Como, or some such, if I remember correctly ) and despite the unforseen expense, considered it money well spent.