Sonic Visualiser language and key shortcuts

[vmach]

Hello, I'm new to Sonic Visualizer. I have a Windows binary version on my W7 in Czech. After instalation of Sonic Visualizer, the software is automatically translated to Czech (very poor) but I want to have it in English. How can I change it?

Next problem is that there is no "spacebar" key shortcut for playing and also it is not possible to set it up.

Could you, please, help me with these problems?
THX!