Sending important information over the Internet has become a norm nowadays. Protection must be done so that information is not easily hacked and misused. Steganography is one of protection method in which hidden information is inserted into a digital multimedia channel. This paper aims to hide image messages into audio files with different formats using the Least Significant Bit (LSB) and Discrete Cosine Transform (DCT) approaches. We conducted a performance test by measuring the Peak Signal to Noise Ratio (PSNR), endurance to compression, and transparency of the host that has been inserted the message. The results showed that the PSNR value of audio files through the DCT process was greater than that of LSB, subjective assessment of the mean opinion score related to audio files through the LSB process was better than DCT, and all audio files did not have resistance to a compression mode.