It's pretty easy to max out your Kindle Fire's storage space. With only 6.5GB of available storage and no option for expansion, it's unrealistic to transfer your entire media library to your new device. That means constantly adding and removing files to and from your Fire as necessary, unless of course, you use an app like Pavtube Streaming Server.
Pavtube Streaming Server will let you stream music, movies, and TV shows wirelessly from your computer to your Kindle Fire HD 7.0/8.9. In fact it streams any audio and video files from your PC to Android, Windows and iOS devices, letting you play local video to Android tablets, smartphones, Windows slabs, etc over wireless network. You can easily access the video in shared folder at home anywhere. That means you can access any file you own (as long as you're on Wi-Fi) without worrying about storage space. Working together with Pavtube Video Converter Ultimate, it’s even possible to stream DVD, Blu-ray and any HD video to Kindle Fire HD tablet.

How to stream MKV/AVI/WMV/DVD/Blu-ray to Kindle Fire HD with the Pavtube apps:
1. Get the Pavtube Video Converter Ultimate, the best encoding tool that handles video, DVD and Blu-ray conversion. Use the software to rip DVD/Blu-ray Disc to free MP4 videos that play on Kindle Fire HD. If you have 1080p MKV/AVI/WMV and other incompatible video, you may also compress and convert these video into Kindle Fire HD playable H.264 files. The process is easy and straight forward: drag source content to the software, select “Amazon Kindle Fire H.264 (*.mp4) format and click convert to get Video Converter Ultimate start encoding video/DVD/Blu-ray movie. With GPU encoding (Nvidia CUDA/AMD APP) and optimized audio and video in sync technology, the software works as a best Video converter, DVD Ripper and Blu-ray Ripper.

How to convert 1080p Video, DVD and Blu-ray for streaming to Kindle Fire HD
Note: If your videos are supported by Kindle Fire HD, it’s not necessary to encode them with Video DVD Converter Ultimate. Just use the free Streaming Server to play computer hard drive video to your kindle tablet.

2. When installing the Video Converter Ultimate, make sure you also download the Streaming Server.

3. Install the Pavtube Streaming Server on your computer. The app will automatically assign an HTTP streaming server port. Take it down.

4. Now you’re ready to stream videos from Kindle Fire HD tablet. Simply open browser on your Kindle Fire HD, enter your streaming server port in address bar and press Enter. The browser will then bring you to the shared folder, where your videos and music are saved.

5. Choose a movie to start streaming it to Kindle Fire HD.

This method allows you to stream a specified video file to the kindle fire without copying back and forth. Keep in mind that the HTTP video streaming is based on near field communication. You can’t access home video when you're halfway across the world. It’s better to transfer movies to Kindle Fire HD tablet via USB if you’re going for a travel.