The present invention relates to a system and method that allows a user to transfer digital data to and from a mobile device between two or more communication devices, in cases where the communication between the devices is restricted or otherwise limited to audio or audio tone transmissions. Transmitting digital data over such an audio communication link may include establishing a wireless, short-range communication link, converting a digital data set to an audio tone sequence, converting the audio tone sequence to a digitized audio signal, transmitting the digitized audio signal from a first device to a second device over the communication link, converting the digitized audio signal back to the audio tone sequence, and converting the audio tone sequence back to the digital data set.