Post more of the Hyperterminal log might help.
Note that copy/paste from Hyperterminal doesn't work, so you'll need to capture the output to a file. I can't remember what that setting's called, but it's fairly obvious.
Then you can attach the log file to a post here.
That said, the first thing you should do is run fsck, as documented in the FAQ, and then allow the player to rebuild its database, also in the FAQ.
To clarify: what's happening here is that emplode deletes the database before beginning an upload (this is fine, it gets rebuilt at the end), but emplode has crashed (or the player rebooted). This is your "socket closed" error. Because of this, the player didn't get a chance to correctly rebuild its database.
This means that the player has no database on it (0xC....2 is file not found). You can get the player to rebuild its database by following the instructions in the FAQ.