First of all.. Welcome to BC..
I'm not a fan of P2P so I have no idea what compression system they are using..
Mostly it is WinRar or WinZip tho.. when you have a big file, you can split it in number of smaller files..
Now if one of those smaller files get corupted or lost, than you have problem.. Easyest is to try and download the whole thing all over again..
Sometimes it is possible to double click on file and when you get error message, (file is missing or corrupted)) you'll see actual file in same window (WinRar).
So than you can click on file + copy it to another folder (and hope file is still intact
If you have video
files and you want to join them, you'll need a program like All Video Joiner or Ultra Video Joiner..
I'm sorry if I didn't fully answer your question..
Down in the bayou, Bubba called an attorney and asked, "Is it true they're suin' the cigarette companies for causing people to get cancer?
"Sure is Bubba. But why you asking?"
"Cause what I want to know is, I was thinking, can I sue Budweiser for all them ugly women I've slept with?"