Graduate coursework not taken for a degree- still relevant for graduate admissions?
The coursework is helpful, especially if you do well in them. It will show that you have understand and have experience with these concepts. The work is not as important as your research, but will be of some benefit. That being said, whether you can transfer them as academic credit towards your graduate degree will really depend upon the school.

As to your CV, simply add a section under education mentioning that you took courses at your new institute. You can list the courses under that and submit a transcript for them when you apply to graduate school.