Complex sentence: Roku manufactures a variety of digital media players that allow customers to access internet streamed video or audio services through televisions, including subscription-based services as well as services that are available through the receiver free of charge.
Split into simpler sentences: Roku manufactures a variety of digital media players that allow customers to access internet streamed video or audio services through televisions. This includes subscription-based services as well as services that are available through the receiver free of charge.