dBpoweramp enables a 21 day trial will all features enabled, if this trial does not activate (and dBpoweramp has never been installed before) follow these steps to activate the trial:
1) Set the user account in which dBpoweramp runs to 'Administrator' (Control Panel >> User Accounts & Family Safety >> User Accounts >> Change your account type).
2) Run Configure dBpoweramp, click Ok to close it
3) Set the Account back to Limited User
4) dBpoweramp should now have a 21 day trial activated.