Ed, a few Australians I collab with use Drooble...they seem happy with it and there're not issues from my perspective as a listener.
The songs cool, there does seem to be more reverb on the extreme panned instruments than your voice but the vocal still sits pretty well.
If anything I'd be inclined to reduce the tambourine's level a couple of db.


Cheers
rayc
"What's so funny about peace, love & understanding?" - N.Lowe