To get the wallet in sync, please follow these steps:
1) Navigate to your Audiocoin folder. This folder is located under C:\Users\\AppData\Roaming\Audiocoin, replace with your actual windows username
2) Make a copy of the file named wallet.dat and move it somewhere safe
3) Delete everything in the Audiocoin folder, except the file named wallet.dat (I repeat: do NOT delete wallet.dat)
4) Download the latest ADC snapshot from https://snapshots.audiocoin.eu/bootstrap.dat and place that file in your Audiocoin folder
5) Start the wallet
The wallet should now show a progress bar at the bottom. The syncing from the bootstrap will still take several hours. You will know when it's finished once the progress bar at the bottom of the wallet disappears.