First of all hello to everybody! And congratulations on this wonderful plugin! I have some questions...

When i use the responsive template and add 2 or more videos to my article it shows the videos one below the other and a single video uses all the width of the module. How can i change this so it displays 2 videos side by side?

Did you read AllVideos documentation?
There you may find how you may display videos in different dimensions.

Yep... i read everything. It covers the fixed style but not the responsive... So? Any ideas?

This has to do  with your responsive template.