Ah yes, it’s been a few years, but I’m remembering now that I had a post-processing script for this. iTunes Match adds an identifier to the file header; third-party tools can use this to fetch other metadata. There was a Ruby script that looked up the track ID in regional stores, but that script had awkward dependencies, and it hasn’t been updated in years. I searched around and found several ports, translations, and updates, but I haven’t tried them. Here are a few:
- Python port (CLI; cross-platform)
- Ruby for Windows port (CLI)
- iTunesMatchAutoTagger (Mac GUI)
- itunes-match-tagger (Windows GUI)
- itunes-match-tagger fork by Swift Wombat (source only; author claims it’s faster)
If all else fails, you could also try a demo of Leawo Tunes Cleaner or Music Tag if you have a compatible OS.