3.1 channel audiophile setup for music and movies

Does anyone have experience with a 3.1 channel setup for both music and movies? I'd like to be able to use my JMR Bliss Silver monitors for both music and movies, but finding a "simple" amp setup so I can listen to music in stereo, and then use a center speaker and sub for films when I want to is proving difficult. I'm trying to avoid having lots of components to deal with. Is there an audiophile amp/preamp or integrated amp setup that could be used without needing a separate AV receiver? Right now I use my Bliss speakers connected to a Bel Canto C5i for both music or movies (C5i is connected to my TV with an optical cable, and also connected by RCA cables to a Bluesound Node 2). It sounds great for music and pretty good for movies, but was hoping to be able to add a center and subwoofer to enhance the movie experience. I don't have any desire to convert to a 5.1 or higher setup, I like the simplicity of having less. Any suggestions/insights are much appreciated.