Also notice that out of the nine "discs" offered by the Newgrounds store are DVDs of popular flash series here on Newgrounds. There is only one actual audio cd in the Newgrounds store. Getting an audio cd in the Newgrounds store would probably be impossible unless you've been here for several years and have a hell of a cd that Newgrounds could make some money on.
But that being said there are a lot of artists that have released cds that are a part of the Newgrounds community. So don't let the fact that you can't get a cd in the Newgrounds store hold ya back from releasing an album. ;-)