In Caynax Hourly Chime when I select chime option a dialog with a Search button appears. But while I have some sound file in my SD it do not show them. How can I choose chime file in this app?
You need to place your audio files in the correct directory structure, as I explained in this answer:
There are special directories you can use to store your custom "noises". The "starting point" (root-of-noises-dir) may be different between devices (so this is rather a generic answer, as I do not own all of them) -- pick one and check if it works, if not, pick the next:
/sdcard/media/audio /sdcard/media /sdcard
In there, put the directories for the specific events:
┌───────────────┬───────────────────────┐ | directory | description | ├───────────────┼───────────────────────┤ | alarms | for your alarm clock | | notifications | for... notifications? | | ringtones | for incoming calls | | ui | keyboard click etc. | └───────────────┴───────────────────────┘
Then place your sound files into the appropriate directories. Done. Now you should be able to pick them in your configuration(s).