Subsonic Radio

Thank you both so much! IMFearless, your explanation did help a lot. Now I understand how this works a little better.

Hello, I'm new to this site and I have some doubts. When I request a song that is available NOW, and it says it is in Queue, does it mean that it is loading, or that is not available? If it takes too long and I need to log out, will I lose the song I requested?
Thanks to anyone who can help me