Friend of TC Nik Cubrilovic posted this clever hack that allows you to listen to the free version of Spotify without having to listen to advertisements. He recommends that it only be used by people who, for reasons of geographic control, cannot pay for a pro account (which is totally worth the cash).
You can grab the code right here. It’s basically Applescript that watches the Spotify stream for advertisements and mutes them. You still have to sit through the silence, but it’s better than hearing the same commercial over and over again.
From the usage notes:
Again, don’t go ad blocking Spotify’s only source of revenue. That’s mean.