My buddy, Joseph Weakland, has been running an on-line Old-time Radio stream, entitled “Audio Theatre” since 2010, but has only been archiving shows since 2012.
The OTR, which has been played on “Audio Theatre” to date, is broken down by genre, with links to individual series within that genre.
Each show’s page has buttons for both streaming every show, as well as direct-downloading them, if your browser supports it. Should this not be the case, simply right-click on the “File Size / Download” button, & select your desired download option.
Enjoy!