When in bash prompt:

# Mount things R/W
rw; rwm
# Go to dir with tunes
cd /drive0/fids
# List all the files, newest at the bottom
ls -aort
# Remove both offending tunes and their tag files (tunes end in 0, tags in 1)
rm xyz*
# Remount R/O
ro; rom
# Restart the player
exit

You will still have to resync in order to repair the playlist with missing tunes.

Dragi "Bonzi" Raos
Zagreb, Croatia
Q#5196, MkII#80000376, 18GB green