I wanted to make a beatmap so I dragged in an mp3 to the game, but it wouldn't show up. It said the whole "New song detected hit F5" thing but when I did that it didn't pull up anything. I tried restarting osu! and my computer but it doesn't seem to detect anything. I tried putting in other mp3 tracks and those didn't work either, but it did detect new beatmaps so I'm not sure what's going on. Anyone happen to know what to do? Thanks.