ALAC .m4a Playback issues

Support
1

App version

Production

Issue description

Hi I have this one song with a very weird issue. This song plays super fine on my mac air m4. I tried to fix it myself using few setting misc but the issue remain at that specific point. When I scroll the song before and after that point the song just plays fine without any issue.

Please look after the issue as I have attached the screenshot, log and the file link to it. I will be buying the app as the app and the community is just amazing.
This is the song link:

https://temp.sh/PHirQ/04_-_Mohe_Rang_Do_Laal.m4a

Device type

Phone

Media provider

Local device

Steps to reproduce

  1. Open
  2. Play the song
  3. Wait for the 00:57
  4. Song playback crashes
  5. Pain

Screenshots

Screenshot_2026-05-28-10-46-09-80_5a95cb7a76adf25e43f1cd66aca96a7a.jpg
Screenshot_2026-05-28-10-46-09-80_5a95cb7a76adf25e43f1cd66aca96a7a.jpg1080×2376 384 KB
Screenshot_2026-05-28-10-43-10-62_5a95cb7a76adf25e43f1cd66aca96a7a.jpg
Screenshot_2026-05-28-10-43-10-62_5a95cb7a76adf25e43f1cd66aca96a7a.jpg1080×2376 565 KB

I searched existing issues first

on

I understand that logs are mandatory

on

Log upload name / description

rocky_alac_660

2

The file seems corrupted I’ve found https://blog.hanlin.press/2025/09/ALAC-Verification-Guide/ that seems to confirm an issue with stuff downloaded from Apple Music.

I’m not sure I can workaround that without risk of high volume or bad data causing more problems than solutions.

3

Hi! That you for the research. I understand the issue but the stuff plays without any issue on my mac as well as mxplayer on android too.

I have had no issues with MX Player regarding this specific song. I am too confused about what is this issue.. I hope there is a fix to this.

Screenshot_2026-05-28-13-39-14-48_010925bd39fdc4bfa0e99fa1d4c2b790
Screenshot_2026-05-28-13-39-14-48_010925bd39fdc4bfa0e99fa1d4c2b7901080×2376 1.05 MB

Screenshot_2026-05-28-13-39-31-21_010925bd39fdc4bfa0e99fa1d4c2b790
Screenshot_2026-05-28-13-39-31-21_010925bd39fdc4bfa0e99fa1d4c2b7901080×2376 933 KB

4

The file is corrupted, some apps are more lenient and accept to possible destroy your ears with bad data that could generate very loud sound. Symfonium does that a lot less to avoid this kind of risks.

5

So Sir! What do you recommend ? For me. I am so close buying this app but this specific thing is stopping me.

Please give me a work around :slight_smile: Thanks!

6

The link I gave you give some, you can reencode the file with tools that accept invalid data to remove the invalid data.

7

It will be very helpful if you could provide me a few of those tools or just one working tool.. Thanks in advance :slight_smile:

8

Audacity ( Audacity ® | Downloads ) can open the linked file, and you’d then be able to re-save it correctly.

But, if I were you, I’d take a look at the bash script on the page Tolriq linked to and run that to see how many files are affected first

9

Hi! could you please help me do that ? a social link of yours can help me a lot. I am on telegram and email.

Also I tried doing the same as you said. The project is saving as an aup3 and if I try to export the audio into something else like m4a but it’s saving at 320kbps max.

10

Sorry man, I’ve never used a Mac so I’d have to be guessing a lot!

What I can tell you is that you’re on the right lines with choosing Export to… (Saving the file in Audacity will just create an Audacity project, which isn’t what you want) but it looks like you need to install FFMPEG before you can export directly to ALAC.

Do a search for “audacity export to ALAC” and you should find something helpful