Just checking if the original poster ever figured this out. I have the exact same issue.

Thanks.

MacOS X creates two files whenever it creates a file on certain file systems (including the one on your MP3 player). One includes the actual file data, and one is a resource file (also called a resource fork) that contains information about the file (like file name, dates, other metadata, icons).

You can delete them, but not with a Mac (on Macs, these two files are treated as if they are the same file when the finder displays files).

I have a Clip+ with an additional 4GB memory card named "SDHC4".

After syncing the Clip+ I use a small script to clean up the OS X specific ._ files.

Copy the code below and save it as a text-only file with ".command" as file extension, e.g. "Sansa eject.command". Double click the file to remove the ._ files and to eject the player.

If you don't have a memory card remove the line "for disc in {"SANSA CLIPP","SDHC4"}" and the line "done" from the script - if your memory card has a different name change "SDHC4" to the name of your card.

#! /bin/sh

for disc in {"SANSA CLIPP","SDHC4"}

do
echo
echo "Cleaning up $disc";

echo "Deleting OS X specific directories"
/usr/bin/find /Volumes/"$disc"/ \( -name ._* -o -name "__MACOSX" -o -name ".DS_Store" -o -name ".Trashes" -o -name ".fseventsd" -o -name ".Spotlight-V100" \) -depth -exec rm -rf {} \;

echo "Ejecting volume $disc"
diskutil eject "$disc"

done

I have some problem with some mp3 files that dont show the correct "Genres"
How can I fix that problem