Support CRC-16 checking of LAME header

From the spec here: http://gabriel.mp3-tech.org/mp3infotag.html

"bytes $BE-$BF contains a CRC-16 of the first 190 bytes ($00-$BD) of the Info header frame. This field is calculated at the end, once all other fields are completed."

So the idea would be to read bytes $00-$BD, calculate the CRC-16 and compare that with bytes $BE-$BF (I think)?