The songs, when sorted by position, start at 1.

The only thing that starts at 2 is the root playlist. The reason is that item number 1 is the hidden folder "Unattached Items" (which used to be visible in version 1.0x of the software). There was a discussion of this in the programming forum about JEmplode. JEmplode does not hide the Unattached Items folder, so it starts at 1.

This is on the internal bug list already, but I'm guessing it's probably not a high-priority item.