dont know why it didnt work for you that way......... you dont "need" any folders for files on the SD.....

however its nice to have folders to keep things a bit more organized.....

heres some of the folders I have for media and images and everything works like it should:

Movies
Music
Photos
Ringtones
Video
Wallpapers

for notification sounds Im not sure...... I dont use sound for notifications

 

Android is pretty good at figuring out finding files on its own and organizing them accordingly. So there aren't any specific multimedia folders for each type.

For notification type sounds, there is a specific folder on the memory card. Its just not created yet by default.

On your sd card, create a "media" folder. Then an "audio" folder within that one. Then within the audio folder, create these folders:

Notifications
Alarms
Ringtones

Then place the ringtones and notifications in each appropriate folder. Then check to see if the phone has found them. If not, you need to reboot your phone and then it should find them.

 

I actually have my ringtones, notifications and alarms folders in my root. Phone found em fine. I suspect Android is smart enough to use those folders pretty much wherever you choose to put them.