Option to supress "File ... cannot be opened" dialog.
When using audacious in the background and doing something that needs attention (e.g. reading e-books or coding a software) its very annoying to see the "File cannot be opened" message box a lot of times (e.g. when some songs are on a temporally unmounted network or cd drive).
I thing an option to suppress this message box would be welcome, but a small delay is needed to avoid 100% CPU usage when starting a play list filled with unreachable files.