A friend rang me this evening to see if I knew why AVG was saying there was a virus when he tried to run Spotify.
He couldnt stop it popping up when he opened Spotify or played a new track even when clicking Ignore or Add to Exceptions.
I tried it on mine and it was doing the same thing.
To add it to the exceptions, Spotify have said that its definately not a virus, you need to add it to the exceptions in the AVG User Interfaceby right clicking on AVG and selecting Open AVG User Interface, then double left click on Resident Shield and left click on the Manage Exceptions button at the bottom left of the page.
Click on Add Path on the right side of the new window and browse for C/Program Files/Spotify
Tick the box and click Apply and that should fix it.