From personal experience most of his files seem to be semi independent of each other. There is slight quirk differences from one file to the next. I am going to give some examples but it is spoiler territory so don't read this post if you are not the OP and do not want to know what some files contain.
[spoiler]Almost all of Mr Daniel's stuff contains a focus on wearing makeup, high heels, and pantyhose. Also, all women who joined the castle collective were supposed to become bisexual but only able to gain pleasure from each other as well as him. (Probably to prevent harem size becoming too big for him to regularly keep everyone pleasured constantly but to avoid angst and loss of control.) Beyond that certain files have specific focuses.
For example, the cheerleader files have the listener gain a fetish for jumping around acting like a cheerleader but with no top or bra on so her breasts bounce around free for people to see, it also tries to make the listener not even realize that her breasts are exposed or that anything is wrong. The more they bounce, the happier the listener is supposed to feel.
The Castle files were supposed to be the main files that his clients / harem were supposed to listen to at the start and as maintenance. Specifically, I believe the file bliss_castle was supposed to be the starter and main file to use until a subject personally was told to use a different file by him. The file has an almost endless loop so a subject could end up losing 10 hours straight while listening to it without realizing it. After a listener had listened to the file an X amount of time a trigger was added that had them sending a message to him telling him that they had passed stage xy. At which point he would suggest a different file to begin using as their personal maintenance program, but it would be different for each user depending on whatever quirk he wanted her to have. Either he wanted a diverse harem, or he got bored easily so each person seemed to get different quirks added to their programming. For example, supposedly some women were turned into complete bimbos, while others actually were encouraged to become brainiacs. Some women were turned into maids, others were turned into strippers. Some women were made into dommes but left submissive to Daniel himself and with a special fetish for dominating other women. Etc.
Files with days, weeks, or specific dates in their names were supposed to be listened to at that time specifically because of additional mission programming they were supposed to fulfill at that time. For example one file instructs his girls to seduce their closest female friend. Every time their name was mentioned, they spoke, or you saw their face you were supposed to instantly feel both an intense desire and deep shame for feeling that desire. These feelings were supposed to continue to get stronger until you gave in and seduced her. I would tell you the name but I can't remember which one it is for some reason.[/spoiler]
That is about all I can say on the matter. Unfortunately, Mr Daniel has long since left the scene so a few of his files no longer work, and it appears to now be impossible to contact him so a bit of the original power of the experience is gone.