CAN SOMEONE TELL ME WHY SOME SONGS IN MY LIBRARY ARE IN RED ? THANKS ,

The files in red aren't being shared. To share them, right click & choose "share file". Now they'll turn black

THANKS FOR THE QUICK INFO !!!! CAN YOU TELL ME WHY MY WINDOWS PLAYER STOPPED ADDING FILES FROM MY LIBRARY ALL OF A SUDDEN ? IS THERE A MAX AMOUNT OF FILES THAT CAN GO INTO MY WINDOWS PLAYLIST OR IS THERE A PLACE TO ADD MORE FILES TO THE WINDOWS PLAYER ? THANKS,