TuneIn Radio recordings

sorry but according to this article:
https://www.filetypeadvisor.com/extension/tir

.tir is proprietary to tunein and thus is copyrighted.......it is against AF policy to discuss pirating copyrighted files.

but you should be able to still listen to old recordings. you just record new shows.

 

Use RadioDroid instead.

https://f-droid.org/en/packages/net.programmierecke.radiodroid2/

 

Even if the file type is proprietory, if the OP was legitimately allowed to record these files in the past for personal use, then there should be no copyright infringement as long as they are only for personal use.
(Think of recording CDs onto cassettes. This is the same as changing file types.)

I would try a site such as https://www.online-convert.com/ to see if the file could be transposed into another type.

 

Also, according to the article mentioned by @ocnbrze , there is a chance that your app version is old enough that you might be able to just change the extention (the .tir part) of the files to whatever format your chosen player will accept.

 

Radio stations often stream in just regular MP3. Maybe that's all these TIR files really are, MP3? Which was the original broadcast format.

Try renaming one to the MP3 file suffix, and see if it will play in VLC or something.

 

I guess they're in some unknown proprietary format, maybe encrypted with DRM as well. Which someone would need to hack.

There's a lengthy XDA Devs thread about it here...
https://forum.xda-developers.com/t/guide-turn-tunein-radio-recordings-into-mp3s.1767380/
Good luck!

 

Did you try the Online Converter I mentioned above?