I'm new, just dl'd toribash 2day. I was wondering how to actually watch some of the replays people have posted. I tried opening the file with toribash, but tht didn't work. Any suggestions?

Welcome to toribash first of all.

Well, Try saving them under the replay folder.

Toribash > replays

save the file to your computer.
Find that file somewhere in the explore menu.
copy or cut it.
Go to Games> Toribash> Replays
Put it in there.

Well I do remember fixing that,
once the replay is downloaded... Open it with the "TB" Application in the toribash folder.
And you can also click on the check box "Click this if you want to open it automatically everytime with the same application", that would save time.