sorry for the confusion, that's actually a bug.
However, the good news is OMG OMG OMG YES!
The store is called
Karaoke Locker and all of it's music comes from
Stingray Music which owns the rights to GUESS WHICH LIBRARY! YES! It's the Sound Choice Library!!!
This new store is not online for kJams yet, but will be i hope within a week!!!