WAV convert ASCII decode 5BIT

Hello, I need an already done software or someone who can make it. Software must be able to decode a WAV file to ASCII text. The sound in the wav file is magnetic stripe. If you can do this, plesae let me know urgent. So basicly I need a tool that will transform the sound into a text which will look like 4588909872347=14902349889032 I already convert WAV file into the RAW BINARY. But I can't convert that RAW BINARY to ASCII. As well as I know the BINARY is 5 bits. I try it 8bits BINARY to ASCII converter but I was failed. My goal is to get TRACK1 number in the WAV file. In the Attach File you will find a sample wav file which have a TRACK number recieved from a magnetic reader. I hope everything is clear. I am waiting for real programmers..