Hi, not sure if this is problem or good news.
After reading various posts on forums about 4gb being the limit for files to transfer via FAT32 and NTFS not working with android tablets, i tested it out with a 14gb 1080p MKV file.
I formatted the 16gb microSD card to NTFS, copied the movie to the card (took about and hour!).
Clicked on Video, choose MVideo player and the movie playe! ..... well sort of. It played but stuttered a bit (though playing a 14gb 1080p file i wasnt that suprised it struggled.)
Will try with 720p equivalent of the file (about 8gb) and see how it goes with NTFS. Fingers crossed!