After you have copied your music from your PC/Mac to the MY OLIVE MUSIC folder it usually take some time for the ONE to import the music into the library. Depending on the size of your library it can take up to 24 hours.
For cases where the music still does not show up we have added a "re-sync library" feature that forces the local library (which displays on the LCD of your ONE) to sync again with the MY OLIVE MUSIC folder (which is the import folder on the desktop of your Mac/PC). This feature is accessible under Settings > System > Music Library.
In software .29 we have also added a "re-build library" feature that will completely delete the local library and re-build it with the content in the MY OLIVE MUSIC folder. This is more time-consuming and should only be tried if the re-syncing does not deliver the desired results.
P.S. We have noticed that some customers are using special software to copy the music to the ONE (e.g rsync). This is currently not supported by the ONE and will also cause some music to not show up in the ONE's library. Please use straight copy via SAMBA to transfer your music to the ONE.