Keep the album image
Work on a copy of your album and CUE sheet. WAV data is copied without quantization when the format is supported. FLAC is decoded to WAV at its original sample rate; 24-bit PCM values fit the decoder representation used here.
Verify before archiving
Play each join and compare the frame ledger. For the previous-gap rule, adjacent end and start frames should agree within a source. A last track runs to the end of its source file. Listen to deliberately discarded gaps before deleting anything.
The tool does not modify the original file. Keep the CUE and metadata sidecars with the outputs so future you can reconstruct the split decisions.
Run and inspect one album
Choose Split my album, select every audio file named by the CUE, and supply either the CUE file or pasted text. Choose a gap rule before running. The download contains actual WAV tracks plus a JSON and CSV ledger. Open several outputs in an audio editor and confirm that sample rate, channel count and integer depth match the source.
For a two-track source with no discarded interval, the first segment might cover frames 0–88,200 and the second 88,200–220,500. Their lengths sum to 220,500 frames. That continuity is a useful numerical check, but it does not prove that the CUE belongs to the correct musical edition. Confirm the audible transition too.
Budget for decoded output
FLAC’s compressed size is not its WAV size. One minute of stereo 24-bit audio at 44.1 kHz contains 15,876,000 audio bytes before headers. The browser rejects oversized output instead of silently truncating it. For large albums, split the source into smaller lossless batches in a desktop editor and adjust the CUE boundaries to each batch. Do not resample merely to fit a file-size limit if preserving the source is your objective.