8. The system of claim 1 , wherein the system comprises a server computer and wherein the application on the first device is configured to transmit the audio data to the second device during the session by transmitting the audio data via the server computer, and wherein the server computer is configured to transmit the audio data to the second device.
8. The system of claim 1 , wherein the system comprises a server computer and wherein the application on the first device is configured to transmit the audio data to the second device during the session by transmitting the audio data via the server computer, and wherein the server computer is configured to transmit the audio data to the second device. 11. The system of claim 8 , wherein the server computer is configured to: receive a request from the second device to initiate the session; send a message to the user of the first device; wherein the first device enters the session after the user of the first device receives the message.