HensTooth Discs makes new discs for the Crosley metal disc music
boxes.  They have a listing of approx. 300 titles, at
http://www.henstoothdiscs.com/MrXmasMetal.htm

These discs are interchangeable with Mr. Christmas(tm) metal discs.
I believe Mr. Christmas offers a small selection of new discs.
Google on 'Mr. Christmas'.

Regards,
Jack Perron - HensTooth Discs
http://www.henstoothdiscs.netfirms.com/