Right-click the in your Windows system tray. Select Register... or Enter Product Key from the menu. Paste your key into the text field and click Activate . Important Security Note
To get a permanent activation key, you must purchase a license from the official Letasoft BuyNow page . Pricing Tiers License Type Basic 1 PC, 1 year of support/upgrades Standard 3 PCs, 2 years of support, 1 year upgrades Professional 5 PCs, 2 years of support/upgrades Source: Letasoft Official Pricing . How to Activate Your Key letasoft sound booster activation key