Streaming Files Help

[LBTLover1]

Okay, so I have this file that I want to sell, but I want to sell it monthly.  I don't want them to buy it, download and use it at their free will, I want them to use like a login to stream the file instead of download it.

E.G. Say a user wants to buy my file.  They buy for one month.  They login into their username and password which gives them access to stream the file instead of download it.  This is so they won't abuse it at all.

How would I come about doing that?  Is there a software that can help with that?

Thanks in advance.