Match the source names
Select every file referenced by a FILE line. Spaces inside quoted filenames are preserved. Rename a CUE reference only when you are certain it identifies the same audio; different discs may have different zero points.
Reject unsafe boundaries
Track indices must increase within each file and remain within its decoded duration. A boundary past the end usually means the wrong source, a damaged file or a CUE made for another edition.
Compressed or extensible WAV files are not decoded by the direct PCM parser. Export ordinary PCM WAV or FLAC in your audio editor. Batches are bounded to keep browser memory predictable.
Diagnose the exact error
A missing-file message identifies the FILE reference the parser could not match. Compare spelling, extension and case with the selected file; a reference to Disc1.flac does not select Disc1.wav automatically. Select the actual corresponding source rather than changing a reference to an unrelated file just to clear the error.
An out-of-range boundary needs a different check. If a CUE expects a track at 61 minutes but the selected source lasts 58 minutes, the discrepancy cannot be fixed by rounding. Check for another edition, a truncated rip or a CUE that spans more than one source. Within each file, track starts must increase and each track needs INDEX01.
Know the parser’s deliberate limits
Only AUDIO tracks are split. Data tracks, generated PREGAP/POSTGAP silence and unsupported WAV encodings are rejected. A FILE line’s format word does not override the selected file’s actual bytes. The tool reads ordinary PCM WAV directly and decodes supported FLAC locally; output tracks are WAV even when the input was compressed. Save metadata sidecars because album/title/performer text is not embedded as WAV tags.