Linux apps and /mnt

[RW]

I just mounted a device at /mnt/t and tried to access a file from linux 
realplayer. It couldn't see anything under /mnt at all, it seems that it's 
actually seeing /compat/linux/mnt.

Why does /compat/linux/mnt exist? Is there some serious problem of having 
linux apps see /mnt (like they see the real /home, and any non-standard 
top-level directories)? An what's the best way to handle this?