Yeah mine does the same thing, it's so strange - and this is when trying to stream the file over Samba. With MP3's sometimes it will pause on the one I select to play, then skip to the next, not play it, skip to the next, not play it, until it goes through the whole list, while all the while it sounds like the DVD drive or hard drive is scanning for something. But not like the usual scanning sounds, the kind of sound that makes you worry it's going to break.
Also, I have the other problem with only being able to play files from subfolders. If I try and play any other, the system will freeze for a bit then start acting strange for everything else until it's restarted.
Is Samba really this unreliable that I should go back to relax streaming despite it's slow speeds?