I have thousands of songs on my NW-HD1 and have started playing them using the "TRACK SHUFFLE" so that the player chooses the songs at random. However, I have noticed on numerous occasions now, that it tends to choose the same songs from the many possibilities over and over again. For example, if I listen to 30 songs in one session, the next time I use the player, it pretty much chooses the same 30 songs as those chosen for the previous session. The only difference is the 30 songs are usually in a different order and the odd new randomly selected song from the possible thousands gets played. I haven't bookmarked any songs so I find it very strange that this should happen. Has anyone else noticed their playing doing this? Does anyone have any ideas how to stop it doing this?