Default [Q] Notification sounds problem

Hi, I bought this device yesterday.
I have one (not so big) issue.
System can't see my notification sounds. I copied them as usual to "Notifications" folder, but when I try to change sound in preferences or in Gmail I don't see my mp3 files. When I copied them to "/system/media/audio/notifications/" then is OK.
Google Nexus 7 (2nd gen.) 16GB rooted KitKat 4.4.4 + GravityBox / Android L preview on MultiRom

&

Motorola Moto G rooted KitKat 4.4.3 + GravityBox


Slovenčina pre Moto G/Slovak language for Moto G TU/HERE