Hi Haunton,
I have done some research and found that the SongBird Logo was a registered trademark of the Carson City Parlour Productions of Shakopee, Minnesota (no longer in business)
The jukebox mechanism is a NSM ES-2 so that is the type of mechanism to go for.
Here is information for a listing on Ebay for a repair service on the ES-2 mechanism
NSM Carriage Repair Service Item number: 230327115136 this is in the UK.
Regards
Alan Hood
ami-man
UK