Sound card Testing

[broadcast]

Is there a way for me to test my sound card to see if it's working properly?

I'm trying to record something with garageband using my podxt live, and it makes a crackling/popping sound every now and then. I plugged headphones directly into the podxt live and it doesn't make the crackling/popping sound... so I'm wondering if there might be something wrong with the sound card, or the sound card isn't made to do this.

I'm using a new macbook pro

 

[broadcast]

Bump

Just to clarify, the podxt is connecting to the computer via USB. It's just guitar

 

[eatmyshade]

did you download the drives?

i have the reg pod xt nu live

 

[eatmyshade]

http://trick77.com/2008/11/09/how-to-connect-the-line-6-podxt-to-garageband/

thats the guide i used to get mine to work

i also had the crackling popping noise too but then i noticed the plug wasnt all the way in lol