Hi Simono,
I wonder if your source material is 'faulty / corrupt' ?? I have exactly the same player from Ebuyer (
http://www.mympxplayer.org/album_pic.php?pic_id=396 )
http://www.ebuyer.com/UK/product/126065
I have had no problems copying 4 or 5 albums at a time - it just copies across, like using a memory stick.
btw, I format the player to FAT32.
Is there anyone you can 'borrow' some MP3's from, to see if their's copy straight into yours? I remember I had some strange MP3's a year or so ago.. They played fine on the PC, but 4 minute songs were reported as 50+ minutes, and I could never transfer them across to other players. ???