The instant application describes a method for enabling a user of a mobile device to purchase a Ring Back Tone (“RBT”). The method includes steps of receiving an identifier associated with the mobile device that has received the RBT as a result of a call to another device and a mapping identification code associated with a RBT content identification code; generating a long code for the mapping identification code; and generating a message with the long code as a reply-to-number. The method also includes steps of sending the message to the mobile device, the message offering the user of the mobile device an option to purchase the RBT; receiving a response from the mobile device, reflecting the mobile device's user desire to either purchase the RBT or not to purchase the RBT; and identifying the mapping identification code from the reply-to-number in the response. Upon determining that the user desires to purchase the RBT from the response, allowing the purchase of the RBT by determining the RBT content identification code based on the mapping identification code.