Here is their lone Victor 78 on you tube:
https://www.youtube.com/watch?v=t3xZcO5eidQ
It's not very good, and I offer this opinion as a big fan of theirs. You would think with Victor and RKO Radio Pictures both being Subdivisions of RCA, some of their musical numbers would've been recorded on commercial discs, but alas, no.
The Vitaphone Project, as a fund-raising measure, offers a two-CDR set that claims to include "virtually every one of the songs from their 1929-37 features," but they are using the term "virtually" extremely loosely here--many of my favorites are missing. If you are really interested, I will dig out my copy and refresh my memory as to what is on it.
http://www.vitaphoneproject.com/
Yes, it is pricey, but it certainly goes to a good cause!
I'm awfully fond of this routine from "The Stolen J00LS," @ 8:45
https://www.youtube.com/watch?v=QTixNeJwudg
Best wishes, Mark
Best wishes, Mark