Yes — drop a folder of AIFF files in and we process them in parallel. Premium has more parallel workers and no per-file size cap, so a 500-file batch typically finishes in minutes rather than tens of minutes. Tags and folder structure are preserved.
Same-codec re-mux (e.g. FLAC stream inside one container moved to another): 10-30 seconds. Re-encode to a different codec: typically 10-20% of source duration, so a 1-hour AIFF → Opus finishes in 6-12 minutes.
Why is the Opus file louder or quieter than the AIFF source?