If not, would the info that the 3.0 player outputs on the serial port be enough to
get it up and running?

yes and no. If you can catch it and parse it out, then yeah, not a problem.
The display *WILL* try to display the info the the player app spits out , however, the display will wrap the cursor - so that once it reaches the end of the display, it loops back to the beginning (left side), but NOT drop down, so it will over-write what was just displayed...

(Note that I haven't actually seen 3.00a3's output. II'm basing it all on 2.00's output..)

Me.