Converting FLACs to Opus

I have music collection of over 12,000 tracks. I prefer to actually own my music (ie digital files) and being able to play it on any device I choose rather than using a service like Spotify. That said, I also prefer using OGG over MP3, and the majority of my music collection is (currently) in OGG Vorbis format. Over the years, I've been accumulating lossless albums from places like Bandcamp and transcoding them. Managing my music library comes with it's own set of challenges and mysteries. I've had a recurring issue where audio playback occasionally stutters on my Android phone (and any Android device for that matter, regardless of hardware) when doing OGG Vorbis playback. It's been a multi-year learning process which involved falling down a technical rabbit hole, but I finally figured out what was causing it and what the tedious solution is. I learned that OGG Vorbis is an older standard and Android Media Framework does not place nice with it. Opus, on the other hand, is a newer,…