A method and system, suitable for using an original entertainment file for playing as a ring tone on a communication device (104), is provided. The method includes decrypting (304) a part of the original entertainment file using an authorization key upon receiving an incoming call signal. The part of the original entertainment file is played (306) until the incoming call signal is acknowledged. The method further includes decrypting (308) a remaining part of the original entertainment file using the authorization key after the incoming call signal is acknowledged. The remaining part of the original entertainment file is then encrypted (310) using a local authorization key to form a second entertainment file. The second entertainment file is then stored (312) in the communication device.