hmmm, if you download the M3Us & open them in a text editor, you get a URL for an MP3, which you can download in a browser. Can you do that?

When the URL for the M3U is http://ps1.el.net/web/archive/metafiles/m3u/sbarcmom_MOMA_ArtofAssemblage_bii.m3u, the URL for the MP3 is http://ps1.el.net/media/archive/mp3/sbarcmom_MOMA_ArtofAssemblage_bii.mp3. Not sure if that holds for all of them.

Is there something you can drop M3Us in and get MP3s out the other end? that would be nice.