Originally Posted by Jpup
how do I know if my sound card has a line level input or how do I switch it to that? I have no idea what that is.
Do you have your computer hooked up to external speakers? If so, look at where the speaker wire connects to the computer. Near there should be other "gozinta" and "gozoutta" for audio connections. Typically, there's a single input and it might have a picture of a mircophone next to it. You'll probably need an RCA pair to 1/8" mini jack to make the connection.
In your "Sound" control panel on whatever platform you use, there might be a way to set the input gain. Try and set it so whatever meter you have is constantly in the middle of it's range. Don't try and get it near the top and try to keep it off the bottom.