Let me answer for your questions.
1. You are testing locally. So, make sure that the path http://192.168.1.10/media/video/my-video.mp4 is correct by copying and pasting it on new tab. It should lead you to download video. For a localhost, you do not need to provide IP. So, just replace your IP address by localhost. (http://localhost/media/video/...)
2. When using the correct path, you don't see this issue. (Similar to first one)
3. You have purchased license key for your domain. So, it will work for only the site you purchased. In localhost, you can only see the demo logo. After hosting it to live, our domo logo will be removed automatically. You can test all the other functionality of HDFlvPlayer in localhost except Logo.