How do you open and use a file?

I downloaded a file, but can't get it open to use it. I've searched everywhere. How do I open and use a file, after it is downloaded?
I've doubled clicked it, shift, and right clicked, launched, opened, nothing gets the file in a place for me to use it. Thanks

[mlledes]

on what kind of file you are trying to open. on my version of limewire, if i am launching a music file,whatever media player i have as my default player will automatically begin playing the file. the same happens with video files.

I'm still having the same problem - using LW 1.7, my mp3 player(s) refuse to recognise or translate Limewire MP3 docs

Whats billed aMP3's in my search list are translated down as Limwire docs. Double clicking merely starts up Limewire - please help - so frustrating : hugoc@btinternet.com

[mlledes]

see section 4 in the TroubleShooting FAQ it willexplain this problem of yours...