Here are the common ones that are popular:
- Plex (as noted below by @Xekomi, it can be free)
- Audirvana
- JRiver
- MediaMonkey
- foobar2000 (free)
- Apple’s iTunes replacement: Music (free)
- Music Player Daemon (mpd) (free)
- LMS (free)
There are also streaming services’ apps, but they won’t support your local files, and most won’t support your SM200.
I’ve made note which are free as well. While there is a cost in time/effort to try them out, it costs you no $$$ to give it a shot. You could even use them in conjunction with Roon for no added fee.