An apparatus and method for verifying the audio output at a client device are provided. With the apparatus and method, when a user requests access to resources, a profile for the user is retrieved and used to determine whether the user is to be presented with audio advertisements. If so, a test audio advertisement is sent to the client device. An agent application on the client device outputs the audio advertisement, via a speaker, to the user and records the audio that is being output by the speaker using a microphone or other recording device. The recording of the audio output is then sent back to the server that sent the original test audio advertisement for comparison. The server then compares the recording of the audio output to the original test audio advertisement. If the recording matches the original test audio advertisement, access to the resources is granted.