If you already have Word, it includes the tool needed to do that. It's called VBA and you can use it to program a macro that does what you want. So, while it isn't really free, it's free for you, since you already paid for MS Office.
Hiring a programmer isn't free, but doing it yourself can be considered free also.
An alternative is to prepare for a rather long session to copy/paste all lines to Excel. Let me see: 192 pages times 50 lines a page = 9600 copy/pastes. That's a lot.
It's faster to replace all paragraph marks in one address in a tab (just a few keys, always the same, so it's one recorded macro for each line, using a shortcut. That's some 10.000 lines. A good optimization is to record different macro's for addresses of 2,3,4,5 and 6 lines. Then it's one shortcut per address. That's some 2000 keypresses.
Might be faster than learning to program VBA. But it's certainly cheaper than hiring a programmer. And it's an excellent lesson about not using MS Word as a database (might not be something you did yourself, then it's not a very effective lesson).
You can save the file with all that lines with tabs as a text file and import in Excel to use as the mailing list. It might need some manual cleaning up.
Kees