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I want to know what is some files that I found an old vocal book software. I think they're something like audio files but I don't know how to play them or convert them to a regular audio formats so then I can play them.

random formats screenshut these files have random formats like ".1302-2" and ".1302-1".

I even found some shared signs from two ".1302-2" and ".1302-1" files as in image.

I have upload one of the files to checkfiletype.com website and it results as below result image

pls help me with this, I paid for these vocal books but now the support services of the software team could not respond me.

There is ".1302-2" and ".1302-1" files if you want to check them closer

hex signature is 1b 04 01 1e and does'nt matches with list of file signatures

Amir Jam
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  • That "file type" is just whatever comes after the last `.` in the name, when that is not known. "application/octet-stream" is just "unknown binary" - so that doesn't help you. – Hans Kesting Aug 11 '23 at 06:37
  • thx for your point but I have around 410MB of these "unknown binaries" and I have to decrypt them or someway to make them regular audio files. – Amir Jam Aug 11 '23 at 06:40
  • They may be specific to the application they belong to, so no public converter is available. What *is* that application (maybe someone knows about it)? – Hans Kesting Aug 11 '23 at 06:43
  • I can upload all the "app data" of the android application that would be belongs to. – Amir Jam Aug 11 '23 at 06:48
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    Check the first 4 to 8 bytes they're made of and compare it to this list: https://en.wikipedia.org/wiki/List_of_file_signatures In your terminal type `head -c 4 /path/to/your/file | hexdump -C` and copy what's after `00000000` in the output. If it's not in the list, it's a proprietary format. Reading the raw data may still help identifying what it is, so you may want to paste it here in your question. – Kaiido Aug 11 '23 at 07:05
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    I checked out the file and there's no format I recognize, including checking the magic bytes as @Kaiido and trying to open it as PCM. Whatever this is, this is probably not a standard format. – Evert Aug 11 '23 at 07:16

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