There are three categories of mp3s at http://efolkmusic.org
Free mp3s (to anyone)
Member mp3s (free to eFolkMusic members, for sale to non-members)
For sale mp3s (to anyone).
Currently, I have free, member, and for sale mp3s available. All my mp3s are available to preview (full-length songs) without charge.
The free songs show up on the first page. Click the ‘download’ link to hear the rest of the songs.
I’ve labeled them modern folk and childrens for this group of songs (some of each).