I have made Update to 2.5.0 and also had briefly in the Library my songs. Now I see none more. Have in media folder refresh. Unfortunately, no songs in the Library.

Airtime checks:
AIRTIME_STATUS_URL             = http://88.198.160.xxx:8080/api/status/format/js                       on/api_key/%%api_key%%
AIRTIME_SERVER_RESPONDING      = OK
KERNEL_VERSION                 = 2.6.32-5-openvz-amd64
MACHINE_ARCHITECTURE           = x86_64
TOTAL_MEMORY_MBYTES            = 1048576
TOTAL_SWAP_MBYTES              = UNKNOWN
AIRTIME_VERSION                = 2.5.0
OS                             = Debian GNU/Linux 6.0.8 (squeeze) x86_64
CPU                            = Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz
WEB_SERVER                     = Apache/2.2.16 (Debian)
PLAYOUT_ENGINE_PROCESS_ID      = 306
PLAYOUT_ENGINE_RUNNING_SECONDS = 584
PLAYOUT_ENGINE_MEM_PERC        = 1.5%
PLAYOUT_ENGINE_CPU_PERC        = 0.0%
LIQUIDSOAP_PROCESS_ID          = 685
LIQUIDSOAP_RUNNING_SECONDS     = 575
LIQUIDSOAP_MEM_PERC            = 1.8%
LIQUIDSOAP_CPU_PERC            = 1.4%
MEDIA_MONITOR_PROCESS_ID       = 533
MEDIA_MONITOR_RUNNING_SECONDS  = 583
MEDIA_MONITOR_MEM_PERC         = 1.3%
MEDIA_MONITOR_CPU_PERC         = 0.0%
-- Your installation of Airtime looks OK!

 apt-get update && apt-get dist-upgrade

 service airtime-media-monitor restart

has not helped.

what now?