For a while I thought that sexual energy was important for LDing, and it does seem that on the 6th or 7th day after a man (the study was only performed on men) has abstained from ejaculation, acetylcholine levels spike (which would indicate increased chances of lucidity). However, these acetylcholine levels returned to normal on the following day, whether the man experienced ejaculation or not.

In practice, I have tried what you are describing (abstaining from ejaculation for a period of time--1, 2, 6 months) and have ultimately not seen the correlation between coitus reservatus (or whatever you want to call it) and increased lucidity in dreams. The body ultimately returns to its own level of homeostasis, whether you are letting the kids out or not. And while there are methods of transmuting sex energy, I have never heard of binaural beats or OM being able to do that, and I did a fair amount of research on the topic while it was an area of interest. You may have discovered something new, or time may demonstrate that this method is not as powerful as you think.

My own opinion (based off of my reading and practice) is that basic awareness is most important, followed by appropriate thought patterns (intention, memory, and so forth). I think all of the "methods" people offer (including mantras to alter the body's endocrine systems/chakras, binaural beats, withholding ejaculation in men, reality checks, whatever) all serve as supports for awareness, but not much more than that. The reason is that none of this stuff is permanent, and needs to be kept up on a daily basis. Even simply withholding ejaculation is no permanent method, for the reasons stated above. Eventually, the body's sexual energy goes into dormancy through not being used.

I do think being conservative with ejaculation is a good idea, as it allows one to possibly take advantage of the acetylcholine spike, as well as not exhausting the body's resources, which would not really be helpful to LD. But the amount of sex one can have depends purely on genetics and age. In Tao, they say that for every year a man has been alive, they should abstain from orgasm for that many days. Not sure I am interested in doing that anymore, but it's there for whoever wants to try it. Traditionally, women are seen to be able to orgasm whenever they want, although part of this was based off of the man stealing the woman's life force during intercourse.

The technique that I did find on circulating sex energy came from a book by Ken Wilber, "The Simple Feeling of Being."