First of all, there is not much difference in Linux distributions when it comes to mp3 player support, imho. There is of cause many other reasons for people to choose and prefer a certain distribution - but this is not the ideal place to discuss it. And it will probably be of little help to the OP.
Back on topic. I believe, ext2/ext3 filesystems will never make it to a portable mp3 player because fat/vfat is a reasonable choice already. And it is well supported by Linux. The problem of renaming files/directories may well be related to the use of MTP mode connection (even on M$ systems). But even in MSC USB connection - which I use exclusively and without any such problem - I’d like to mention that there are several different mount options for vfat under Linux resulting in different file names.
What is your USB connection setting? How do you copy your files? How do you find/access them on the fuze?
