Version: SeeMusic 4.3.5, Windows 2.2 GHz, 16 GB RAM
Currently in SeeMusic, there is no file type filter when importing files like MIDI or background image.
It should be a rather intuitive thing to do, for example, if I am importing MIDI, I only want to see files with .mid extension, similar to importing background image, I only want to see files with .jpg, .png etc. extension. But now in SeeMusic, I am seeing everything and it's difficult to look for the correct file to import.
Here's an example from Microsoft Word, when I am opening a file, I would only see files with relevant extension. Of course if I want to see everything, I can always select "All Files".