Change text in Media Manager

Hi,

I have created language overrides for the following in the Media Manager, but they don't change the output on the live site:

1. COM_EASYBLOG_MM_ADD_MEDIA - tried to change to "Add Pictures"
2. COM_EASYBLOG_MM_BROWSE_MEDIA - tried to change to "Browse Pictures"
3. COM_EASYBLOG_MM_UPLOAD_MEDIA - tried to change to "Upload Pictures"
4. COM_EASYBLOG_MM_EMPTY_FOLDER - tried to change to "There are no pictures in this folder"

I was able to successfully change COM_EASYBLOG_MM_MY_MEDIA to "My Pictures".

Also, in the Browse Media window, can the "My Media" folder be expanded as default? So that when the Media Manager is opened, all the sub folders are in view?

Thanks

Ian