I bought a 64 GB card and when I stick it in get the following error:

Unable to mount 64 GB Volume
Error mounting /dev/sdc1 at /media/bmike1/3130-3431: Command-line `mount -t
"exfat" -o
"uhelper=udisks2,nodev,nosuid,uid=1000,gid=1000,iocharset=utf8,namecase=0,errors=remount-ro,umask=0077"
"/dev/sdc1" "/media/bmike1/3130-3431"' exited with non-zero exit status 32:
mount: unknown filesystem type 'exfat'

What in the world is 'exfat'? Does anyone know of a way to fix this they
could share with me?
-- 
:-)~MIKE~(-: