MIDI files from Monique posted. Here's what she has to say:

Here are the midis to post on http://www.mudcat.org/thread.cfm?threadid=49739&messages=11
The file "Dans les prisons de Nantes 1" is to post with the 2nd version I posted.
The file "Dans les prisons de Nantes 2" is to post with Gweltas' version though it slightly differs because of her "damdidelidam" stuff being longer by one or two notes.
The file "Dans les prisons de Nantes 3 is to post with the 1st version I poste (it's the same version as #2 but the "tralala" at the end.
The file "A la tor de Marmanda" is to post with the Occitan version.

I couldn't find anything about "Sur le pont de Londres". We have a totally different song called "Sur le pont de Nantes" or "Sur le pont du Nord" about a ball/dance being given there, and the pretty Helen wants to go but her mother doesn't want, so her brother goes with her but the bridge falls/tumbles down in the river and they drown themselves with "Here is the disobedient/stubborn children's fate" as a final moral sentence!

Thanks a lot, Monique. I hope I matched the right MIDI files to the right songs.
-Joe-