I have the same problem too. What I did was cut away at the thick plastic around the charging port with a soldering iron, then I removed the broken part of the charge port and soldered a wire to the +ve and -v e ends of the port and connected these externally to another port and charger which I took from an old device.
The space to solder was pretty tight , so I dropped some solder first then heated it up and 'inserted' my extender cable. Then I tested the leads for continuity to be sure i hadn't bridged the two poles.
Problem was then with the charging power rating. The Fugoo's adapter outputs 19V at 2.37A, the charger i had only did 12V at 2A; so I cut off the head from the 2 chargers and replaced the one at the end of the Fugoo charger. Not the most elegant solution but it got me my speaker back and i got to re-use old parts heading to the dump pit.