audio streaming app
plyr.fm
docs: status update — costs export fix, AuDD removal complete (#1169)
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
authored by
nate nowack
Claude Opus 4.6
and committed by
GitHub
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STATUS.md
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STATUS.md
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### March 2026
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#### costs export tied to release tags + legal date guard (PRs #1166-1168, Mar 20)
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**why**: merging PR #1163 (AuDD → AcoustID) changed the costs JSON shape (`audd` → `copyright_scanning`), which broke the production `/costs` page. the hourly `export_costs.py` runs from `main`, but the production frontend deploys on a separate release cadence — so the script's output shape changed before the frontend was ready for it. separately, the privacy policy content was updated (#1164) but the backend `terms_last_updated` config wasn't bumped, so users weren't prompted to re-accept.
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**what shipped**:
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- costs export workflow now checks out the **latest release tag** instead of `main`, so the script shape always matches the deployed frontend. data stays fresh (hourly from prod DB), but the shape only changes when a release is cut
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- CI-only guard on `export_costs.py` — refuses non-dry-run outside GitHub Actions
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- pre-commit hook (`check-legal-dates`) that catches two things: stale privacy policy "Last updated" dates when content changes, and `LegalSettings.terms_last_updated` falling behind the privacy policy date
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- removed dead `R2_BUCKET` / `R2_PUBLIC_BUCKET_URL` env vars from the workflow (script uses `R2_STATS_BUCKET` with defaults)
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- bumped `terms_last_updated` from `2026-02-06` to `2026-03-20`
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- filed #1165 for moderation staging environment (same class of problem — deploys directly to prod)
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---
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#### chromaprint.zig — standalone audio fingerprinting in pure zig (Mar 19)
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**why**: plyr.fm pays AuDD ~$5/1000 requests for copyright moderation fingerprinting. AcoustID is a free, open-source alternative that uses Chromaprint fingerprints, but the official library requires FFmpeg. we wanted a zero-dependency fingerprinting tool.
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### current focus
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replacing AuDD audio fingerprinting ($5/1000 requests) with free AcoustID lookups. a pure zig chromaprint library ([`@zzstoatzz.io/chromaprint.zig`](https://tangled.sh/@zzstoatzz.io/chromaprint.zig)) produces exact-match fingerprints against the reference `fpcalc` implementation. next step: integrate into the moderation service and remove AuDD from costs/terms.
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AuDD audio fingerprinting ($5/1000 requests) has been replaced with free AcoustID lookups via `fpcalc` (#1163). the moderation service now shells out to a vendored `fpcalc` binary and queries AcoustID directly. a pure zig chromaprint library ([`@zzstoatzz.io/chromaprint.zig`](https://tangled.sh/@zzstoatzz.io/chromaprint.zig)) was built as a learning exercise and produces exact-match fingerprints. next: add a staging environment for the moderation service (#1165).
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### known issues
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- iOS PWA audio may hang on first play after backgrounding
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- fly.io (backend + redis + transcoder + moderation): ~$24/month
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- neon postgres: $5/month
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- cloudflare (R2 + pages + domain): ~$1/month
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- audd audio fingerprinting: $5-10/month (usage-based) — replacing with free AcoustID lookups
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- copyright scanning (AcoustID + fpcalc): $0 (replaced AuDD)
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- replicate (genre classification): <$1/month (scales to zero, ~$0.00019/run)
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- logfire: $0 (free tier)
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---
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this is a living document. last updated 2026-03-19 (chromaprint.zig, ambient theme polish, AuDD → AcoustID migration in progress).
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this is a living document. last updated 2026-03-20 (AuDD → AcoustID complete, costs export tied to release tags, terms re-acceptance fix).
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