Hi.

A text log showing the stuff above those numbers would have been far more useful than a screenshot. Ever noted you can scroll back up in the text window, but loose that option in the screenshot?

That said, this looks like a badly messed upped ext2 filesystem. Is it on /dev/hdb* resp. /dev/hdc*, or is it on /dev/hda*? If the later is the case, it is probably your old harddisc, and you are out of luck. if it is the former, you can recover by simply recreating an ext2 filesystem on the given partition and copy your files over once again. I can't tell more without seeing the upper portion of the fsck.

EDIT: I just re-read your post and saw that it indeed is the new disc that throws those errors. Well, you can simply do a mke2fs -m 0 /dev/hdcX where X is the number of the partition in question (probably the music partition, of which I always forget the exact partition number, which is probably 5). The filesystem might be configured in a better way with some other special options to mke2fs, but this creates a filesystem the player can work with. If mke2fs does not exist on the player (I can't check at the moment), use mkfs.ext2 instead.
After creating the filesystem make sure you copy the whole directory structure and files, including empty directories from the old partition to the new one.

cu,
sven