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…