Titles marked as "damaged" but play just fine

[Markus_von_Kienlin]

Hi
I ripped my CD-collection (>500 albums, 10’000 titles) to a Rock server on an Intel Nuc (Roon Version 2.0 build 1483). In the Roon remote app (Version 2.0 build 1211, running on a Mac Mini (2018) under MacOS Sequoia 15.1.1), a few of the titles are tagged as “damaged” (German: “beschädigt”). Yet, they play perfectly fine. See an example on these screenshots:

Further information from the Roon App:

The information given in MacOS finder:

With the exeption of the tag “damaged”, all seems to be fine. Under what circumstances does Roon consider a title to be damaged? Anything I should do to prevent corruption?

Thanks for any hint!

[mjw]

ALAC has an internal checksum, which Roon checks, so it is likely that there is some corruption. However, this doesn’t mean that you can’t play the file, or that you can discern any difference.

[Carl]

@Markus_von_Kienlin

Anything I should do to prevent corruption?

Hi @Markus_von_Kienlin,

Not really other than to redownload the file and see if that version is ok.

To fix, you could transcode it ALAC to ALAC with something like dBpowerAmp Batch Convert (I’ve do this but with FLAC to FLAC).

[Markus_von_Kienlin]

Thanks @mjw and @Carl ! Is there a way in Roon to find all potentially damaged files (some filter?) or some other app to verify the checksum of the audiofiles? It would be tedious to scroll through the list of 10’000 titles in order to identify the titles which I should rip again.

[mjw]

Yes. Navigate to My Tracks, and click on Focus. Then select Corrupt.

[Markus_von_Kienlin]

Great @mjw! This showed me the 186 audio files in my collection that Roon has tagged as corrupted. It now will be interesting to see whether the files on the original CDs are ok or whether the corruption occurs somewhere in my transfer process (CD → Apple Music → Roon Server).