Solution : As far as i know, if the files such as the iTunes movies and tv shows purchases you want to play have DRM protection then you can’t play them on the streak 7 (as you have discovered). This is not a dell streak 7 restriction but rather a requirement of the content owners/distributors. Unfortunately currently the dell streak 7 has not get a license to play DRM contents, which means iTunes movies and tv shows will not even play on the dell streak 7. To get the DRM protected files work normally on dell streak 7, you may have to get rid of DRM from iTunes media files along with some help from the third-party software. Below is something you gotta known when Put iTunes movies and tv shows on the dell streak 7.
First, the most important piece of the equation is that you have a DRM removal tool drive hooked to your PC. There are many programs out there that allow you to make free iTunes media files out of DRM-protected contents and let you watch them the way you want to view them. The combination of iTunes to Andorid Converter, a top DRM removal software handling iTunes DRM-protected videos and Windows Media DRM contents works well. Meanwhile the playback of the converted iTunes movies and tv shows is smooth and decent as possible as original. Below is how.
How to put iTunes movies and tv shows on the dell streak 7
Free download iTunes to Andorid Converter, install and run it.
Before conversion you need:
1. Set up iTunes, and switch to “Movies” under LIBRARY.
2. Choose the movies you want to convert, then right click and select “Get Info”.

3. In the “Multiple Item Information” window, switch to “Options” tab, find “Remember position” and select “No” from its drop-down list. Click “OK”.

Now you’re prepared to convert iTunes media files to dell streak 7 with iTunes to Andorid Converter.
Step 1. Launch the iTunes to Andorid Converter, click “Add” button on the main interface to load iTunes media files to the program, or you can also drag and drop the videos from iTunes Movie Library.

Step 2. Select output format
Click on “Format -> Common Video -> MP4 Video (AVC)”. This format is special designed to help you getting full-screen effect. If you want to customize your movie, you can click “Settings” to do some adjustments.

Step 3. Start to convert iTunes movies and tv shows
When you set finished, you can click the big button “Convert” to start convert media files to dell streak 7 compatible format. When the convert iTunes task is done, you are able to click “Find Target” button to get the final output files for dell streak 7.put them on your dell streak 7.