Edit: Just noticed that I have the first post now, and that some links post to this as a resource, so I'll just attach the official countdown template, as found in the template skin.
The sound files match the images' filenames, but with an S at the end, so:
Readys.wav
count3s.wav
count2s.wav
count1s.wav
gos.wav
Also, make sure that, when you upload your beatmap, you say no when it asks if you want to delete unused files.
The sound files match the images' filenames, but with an S at the end, so:
Readys.wav
count3s.wav
count2s.wav
count1s.wav
gos.wav
Also, make sure that, when you upload your beatmap, you say no when it asks if you want to delete unused files.