On by default. SoulSync probes each imported file's real audio quality and compares it with your Quality Profile. On — files that don't meet your profile are quarantined instead of imported (fallback/downsample settings still apply). Off — files are imported regardless of format, bitrate, bit depth, or sample rate. This does not skip AcoustID; fingerprint verification is a separate setting below. Either way, the library Quality Upgrade Scanner still flags below-profile tracks so you can act on them later.

When importing from Staging, if a track already exists in your library at a lower quality (e.g. MP3), it will be replaced with the higher quality version (e.g. FLAC). If disabled, existing tracks are always kept and the import file is skipped.

When a 24-bit or high sample-rate FLAC is downloaded, it is automatically converted to 16-bit/44.1kHz. The hi-res original is replaced, not kept alongside. Requires ffmpeg.

After downloading a FLAC, a lossy copy at the selected codec and bitrate is created in the same folder. Requires ffmpeg.

Applies to both imports and downloads. When on, a track that AcoustID runs but cannot confirm (no fingerprint match / cross-script metadata — the ⚠ "unverified" case) is quarantined instead of being allowed into the library. Downloads then try the next candidate; imports just quarantine (no candidate to retry). Only a clean AcoustID pass is kept.

⚠️ Use with care. AcoustID "could not confirm" is common for perfectly good tracks — anything not in its fingerprint database: new/obscure releases, classical, remixes, live cuts, remasters, non-Latin-script titles. With this on, all of those get quarantined, so you may end up with many legitimate files to review and approve by hand. Nothing is lost (quarantined files can be approved), but expect manual cleanup. Leave this off to keep the safer default: unconfirmed tracks import with the ⚠ "unverified" badge so you can review them without anything being blocked. Transient lookup errors (rate-limit / outage) always import, so an AcoustID outage never stalls you. Requires AcoustID enabled.

Decodes every downloaded file with ffmpeg to catch fake 30s previews padded to full length and mostly-silent files — the kind whose header lies about the length so mutagen can't catch them. Off by default: this fully decodes each file, the most CPU-heavy post-processing step. Most sources (HiFi, Qobuz) already catch previews on their own, so only turn this on if you see padded/silent files slip through. Applies to all download sources.

Controls what happens when a downloaded file is rejected (AcoustID mismatch, wrong version, or duration/integrity failure) — independent of post-processing. When on, SoulSync automatically tries the next-best candidate instead of failing the track. Off = quarantine and fail immediately.

Give every source (Soulseek, then HiFi/Tidal/…) its own retry budget. Each source spends queries × retries-per-query attempts before the track moves on. Worst case across two sources can mean many downloads — use for hard-to-match tracks (e.g. CJK artist names). Requires the option above.

In exhaustive mode, how many candidates to try per search query per source. The per-source budget is number of search queries × this value. Only used when Exhaustive retry is on.

When retries are fully exhausted and every candidate for a track failed the same version mismatch (e.g. only an instrumental exists), accept the best (first-tried) one instead of leaving the track missing. Only AcoustID is bypassed — integrity/duration/bit-depth checks still run, so truncated or genuinely wrong files are never let through. Off = leave such tracks failed.

How many quarantined candidates must have failed the same version mismatch before the last-resort acceptance kicks in. Higher = more confirmation that no correct version exists. Only used when the option above is on.