Thanks for that. Yeah I finally got it to all compile properly. I put the .c and .h files into a directory, renamed the .c to .cpp and it compiled automatically. I had to change a bit of the code as he uses the C99 standard and I don't know where to add flags when the arduino environment automatically compiles.
I probably will just use the low level read/write routines although the fat16 would be interesting. Just wanted to use robust sd/mmc access routines.