how to view partially downloaded BT files?

I recently downloaded BitTorrent in order to download a series from TV. Right now its at 46.3% with 4 gigs to download. ive got the first... 6 or so episodes downloaded.. i want to see these that i have.. but i cant view the file. its an .avi... i got the K-lite video codec pack (full) and its still not working. i dont know what codec i need. i tried using G-Spot and it just says unknown.. any suggestions?

BT is not downloading the files in order.What BT client are you using? Open your BT again and go details and is going to list all the file and the % of downloading.If is 100% is ok to open it otherwise you have to wait until is done.If GSpot can not open it is compressed so decompress the file with WinRar and find out what is it.4 GB sounds like a dvd with all episodes inside.