Generally, you post the finished show and let somebody else stream it. If you do it yourself, you’re going to be limited to the upstream speed of your internet, which unless you’re a corporation, is usually slightly better than dialup and changes in capacity over the day.
it does have a standard sound card.
Such as what?
If it’s a full-on soundcard, you can just buy a straight interface cable and go into the Blue or Line-In connection.
If the soundcard is sucky, then you might invest in an external card. That’s UCA202.
Multichannel (3 or more) is more interesting. Those are special purpose soundcards and it’s a little hit or miss.
Koz