Techniques for temporarily memorizing a large amount of information

I have 100-200 pure audio lectures, each 30-60 minutes long, which each might contain 30-50 points that I would like to memorize. I am not able to pause them or take any written notes, and they are complex, so I will have to understand the information, decide what I want to memorize, then quickly convert the terminology/concepts into images.
I would need to keep the points from each lecture memorized for a few days, maybe up to a week, because after that I would transfer them to a SRS.

Can someone suggest a good approach? I made a memory street with 10 locations and was considering to just use linking by starting from 1 location and then making a link of 30-50 items, then the next day I would start with location 2 and a link, and after I finish all 10 I would start over.
I also saw an idea to combine loci with pegs:

If I understand it properly, the idea is to have 52 images associated with 52 playing cards, have them in a specific order, and I would re-use the 52 images x 10 loci (in my case) to have 520 pegs?

I am not sure what are the pros and cons of each method. It seems like linking might be easier because I would have eg, 31 images for a topic (30 + the location locus), vs. with a loci/peg method it would be 61 images (30 pegs + 30 images + location locus). But not sure if that is how it works in reality?

Basically I want to get off on the right foot and set up a good system without getting into bad habits. And to create the proper underlying structure first if necessary.

So far in my memory journey I made and memorized 100 numerical pegs using the major system, the 10 street locations, 7 pegs for days of the week which I might use for task lists, and have not done anything with memorizing cards or numbers. I am going through an audio course by Ron White and have a book by Harry Lorayne.
Thanks for any ideas.

Because you will not be able to pause the audios or take notes, will you be able to link 30-50 items so fast in one location?

I would use ‘one loci for one item’ in this case. Because linking two images or more would be tough if I cannot stop the audio lecture! Even if I could link,many of those links may not be memorable enough to recall later! So,one loci for one image/item for me! Or at most,two images/items in one loci!!

But if you can link 30-50 items/images together(chaining) and put them in one loci,that is fine…

I have to practice it. I tried yesterday with 10-15 images and while many of them were okay, a few of them were murky and I wasn’t sure I was recalling all the points (because there are also sub-points attached to some of the pictures) and maybe missing an image or 2.

So you are saying that it is easier to link 30 items to 30 loci instead of linking 30 items to each other?

So if I put 1-2 items/loci, then I would need to use compound loci instead of making hundreds of memory palace loci? Did I understand the example above, I can combine other peg lists with a memory palace and interference doesn’t tend to be an issue?
Thanks for the feedback.

This is an interesting question! I think,this forum has a lot of discussions on this topic-which one is superior-linking/story method or loci method?

For me,loci method is superior to linking/story method! But this is just my personal opinion…

Yes,you are right. I am suggesting to use 30 loci/locus for 30 items/images! Not one locus for 30 items(which will linked together by story method)!!!

But if you can link 30 items /images together and use only one locus to store all of them,well,great…give it a try and see how things go…

In that case I would need a lot more loci. Is there anything more written about what I call “compound loci”? Is there a specific term for it? I haven’t found much by searching the forum other than the post that I quoted above, which I don’t really understand. If I have the image for the 2 of spades associated with 2 different loci, I don’t see how they are really distinguished.