What would make some music not show up in a folder on my 360?

[SAWYER]

I'm streaming from my desktop and in one folder for an artist 2 albums do not show up, they are mp3.
http://img118.imageshack.us/img118/5718/71248371ua6.jpg
http://img207.imageshack.us/img207/731/56033460nw7.jpg

 

[JoPh]

sometimes u need the let the entire folder load before u enter it

the files dont load instantly the first time u do it.

quit and wait a bit then enter the main music folder.