@TroopK:

Would you like to share it? There may be others with the same problem 

Itunes has copy protection compatible with its products called DRM. In order to play Itunes media files on non-apple devices, you need to remove this DRM.
I just follow the instruction here.

https://www.howtogeek.com/291612/how-to-remove-drm-from-itunes-movies-and-tv-shows/
https://pastebin.com/eFFfcyh1

The download links on the two web pages don't work anymore but you can find all of the programs on google. Installing them, I came across a few minor problems but all the solutions can also be found on google.

I've found a solution. It was a bit of trouble but at least it's free.

Is there any way I can do that for free? M4v converting programs are expensive.

They are so sexy and yummy  :cum:

IMO, if the religion doesn't condone your sexual preferences, it is better to reject them.

I feel like I watch too many porn. Anyone feel the same way?