You wont believe how slow this is! All those little pesky files, we'll need to aggregate them. Second attempt:
cp -R /home/erik /media/H300/Backup/
Waiting ... waiting ... Oops, that fails! The FAT file system on the mp3 player only supports files up to 2Gb. After a long but fruitless search in the documentation of tar (and zip) for multi-volume archives options, I suddenly thought of the simplest thing that could work:
tar -cjf /media/H300/Backup/erik.tar.bz2 /home/erik
This creates a bunch of 1Gbyte files ending in part00, part01, etc. You've got to love unix!
tar -cj /home/erik | \ split -d -b 1G - /media/H300/Backup/erik.tar.bz2.part