Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
Roku runs on its own proprietary operating system and will only run apps specifically written for it. Basically, Roku provides the platform on which the channel apps run, but the channels themselves create, provide, and maintain the Roku channel apps.
I can find no indication that SoPlayer has created a version for Roku. If you want to run SoPlay on your Roku, let SoPlayer know.
Roku Streaming Stick +, 3810X, Ser YH0059427035, wifi - Samsung UN55ES6100
Roku Streaming Stick, 3600X, Ser 5S56D8240827, wifi - JVC EM37T