Subsonic can't find new music when scanning library

[Balnes]

Hi,

When I add new music to my library, subsonic fails to find them.
I'm running Windows Home Server 2011
I use StableBit Drivepool (sort of software raid)
My music location contains 22371 flac files, but Subsonic only finds 19091

Extract from the log when I scan media folders:
[28.10.14 09:28:56 CET] INFO MediaScannerService Scanned media library with 19091 entries.
[28.10.14 09:28:56 CET] INFO MediaScannerService Marking non-present files.
[28.10.14 09:28:56 CET] INFO MediaScannerService Marking non-present artists.
[28.10.14 09:28:56 CET] INFO MediaScannerService Marking non-present albums.
[28.10.14 09:28:56 CET] INFO MediaScannerService Completed media library scan.
[28.10.14 09:28:57 CET] INFO PlaylistService Starting playlist import.
[28.10.14 09:28:57 CET] INFO PlaylistService Completed playlist import.
[28.10.14 09:28:57 CET] INFO PlaylistService Starting playlist statistics update.
[28.10.14 09:28:57 CET] INFO PlaylistService Completed playlist statistics update.

Any help would be great