Just want to update this topic, just in case someone else new to toolkit stumbles upon it.
I got it working and I won't say this is the way you should do it (surely there are easier ways?), but this is the way that worked (ish) for me.
install wwise 2010.3.3 as instructed, also install a wwise that works for rocksmith 2014, mine is a 2017. Here's the important bit, it doesn't appear that you can select two wwise's in rstoolkit, so this is a 2 step process as far as I can tell. You can only use 2010 to import the 2012 rocksmith file. You import package, as instructed and then you switch confing wwise that does 2014 and you generate the cdlc.
I would suggest to the rstoolkit makers that a second wwise 2010 config entry would make things smoother but how many people are trying to do what I'm doing? Hardly anybody, I imagine. I just can't get over how bad the loop markers are in the game, so I need to use tonelib jam to figure out some parts. Anyway, I digress.
Extract rocksmith dat phase
In the configuration, set the wwise to be 2010.3.3, path to should be something like:
C:\Program Files (x86)\Audiokinetic\Wwise v2010.3.3 build 3773\Authoring\x64\Release\bin
Click the convert radio button in the CDLC creator tab as instructed and import the DAT file (import package button at bottom) for the rocksmith original content file.
My rocksmith content is in D:\Steam\steamapps\common\Rocksmith\Content, yours will probably be in program files x86/steam etc
The dat files aren't labelled with track name, but I did find a quicker way to figure out what was what (and probably if I'd have googled hard enough, I'd have found a list - or maybe in the software). The APP ID thing doesn't seem to match the dat file naming convention though.
It might prompt you for a place to put the directory, I'd suggest leaving it at the content directory of rocksmith original for the moment. There will now be a directory with a "template" .
ie directory called RS001SONG0000038_RS2012_Pc (I should note that this is painkiller and painkiller did NOT extract out, it's the only one that gave me an error - unfortunate, as this is a prickly track and being able to loop it would be good)
I suggest you import all your packages (ie, create the extracted directory) first. Don't worry, the import made a directory - you can reload what you've done after.
Generate rocksmith2014 cdlc phase:
Switch to wwise config that works for 2014. IE:
C:\Program Files (x86)\Audiokinetic\Wwise 2017.1.9.6501\Authoring\x64\Release\bin
Select rocksmith 2014 in the game version option in the CDLC Creator tab.
Click Load Template down the bottom and go into a directory for whichever rocksmith dat you previously imported. You will go into the directory and see a .dlc file with a sane filename, ie
ie for me
D:\Steam\steamapps\common\Rocksmith\Content\RS001SONG0000037_RS2012_Pc
Click generate
Now, this may fail with something to do with versions as it packages up. It appears to be a problem with the arrangements. I suggest fooling with the gameplay path settings (that is, in the arrangement section, pick an arrangement and click edit). It seems like a lot of them come in with settings that don't look right for 2014. Most of the time, I just adjusted the first one to default and lead, second to rhythm and default and if there was a third, made it an alt lead. I don't know exactly which one is the correct one but since you're not doing this to play in game, it hardly matters - you can select whatever and find the correct arrangement in tonelib or guitar pro if you're just wanting to get something that you can extract to a guitar pro track
Also had problems with hangar18 due to the fixed ogg, seems like there might be a byte count expectation failing. I would imagine if you go hard enough, you might be able to extract the ogg yourself and then feed the wav file in and maybe get it out.
Figuring out which track is which dat, laboriously:
To figure out which dat was which, I dragged the rocksmith content directory onto "convert2012.exe" in the rstookit directory. It didn't fully succeed but what it did was make directories of somewhat extracted templates (but not good enough to convert to 2014) in the content directory. At this point, you have better filenames and you can go into the directories and figure out what song it is. I made a list. (Ie, it made RS001SONG0000001_RS2012_Pc directory, which when you go into, it's clearly freebird).
