Ok thank you
It looks like this lonely file was crashing my library and next xmplay was crashing also after I tested "send to" command ( to xmplay )
Update: The culprit was XMPlay MOD-packer plugin (rev.3)
CRC32: D48F4438
Complete name : Lesfeuillesmortes_Juliettegreco.flv
Format : Flash Video
File size : 5.64 MiB
Duration : 2mn 51s
Overall bit rate mode : Variable
Overall bit rate : 275 Kbps
Writing application : YouTube, Inc.
Tagging application : YouTube Metadata Injector.
Video
Format : Sorenson Spark
Codec ID : 2
Duration : 2mn 51s
Width : 320 pixels
Height : 240 pixels
Display aspect ratio : 4:3
Frame rate mode : Constant
Frame rate : 29.970 (30000/1001) fps
Bit depth : 8 bits
Audio
Format : MPEG Audio
Format version : Version 2
Format profile : Layer 3
Codec ID : 2
Codec ID/Hint : MP3
Duration : 2mn 51s
Bit rate mode : Variable
Channel(s) : 1 channel
Sampling rate : 22.05 KHz
Compression mode : Lossy
Writing library : LAMEULAM