I'm new here, I'm interested in why it doesn't work anymore when you connect the blocks of radio applications or mp3 applications it says Error 702 Unable to prepare so I'm wondering if anyone has a solution or some other procedure thank you?
As I say, I'm new here so I still don't understand this forum, I apologize, can only help or a section where you can find my problem, thank you
I'm in need of an Android app.
perhaps something like this will work
Show error screenshot?
I don't know if I can repeat the same thing here, you have the above two pictures if you know how to solve the problem
I found https://stream2.otvoreni.hr/ this link you can found resourses there, I will try to help you tomorrow.
and other one is https://stream2.otvoreni.hr/otvoreni
Yes
https://radio-stanice-uzivo.com/otvoreni-radio
is a url to a web page not a streaming service.
You also may need a clock timer (e.g. 250msecs) between setting the source and starting play
I used this with the links gave above, but not working
Because it is not a streaming url
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6 years ago everything worked as in the picture, the sound of the radio itself started normally, now it won't work that way anymore, is there any other way if you know?
I expect this radio station changed how it streams audio on the Internet since you last used it Jopa. Your link will not auto load the music it is currently playing using the Player as it possibly once did.
When was the last time that link worked and you listened to music your code Blocks?
You might try the advice I provided earlier about using a Web component instead of the Player. There are not any in the app for a Croatian station but you can find the required link for Croatian radio stations as discussed in this link and try it:
Try http://nnc1-bpmmc501.radioca.st/stream or http://patmos.cdnstream.com:8222/stream?type=http&nocache=120427 in your browser or in the Web app you adapt
From where you got these links?
I only found this URL from below but cannot be able to get the stream done on it like i fetched others from other Websites.
https://stream2.otvoreni.hr/otvoreni - not streaming
Player is a online player that is playing url https://stream2.otvoreni.hr/otvoreni?referer=https://radio-stanice-uzivo.com/
But not in the app the url is working
Edit : this link also works with Exo Player by Zain very clear and very fast V1.0.4 Exoplayer for AppInventor | Play media with Google's Exoplayer
I think there is a problem with Player within App Inventor
I have another problem when I do this, it won't close the application, is there a new way, my mobile phone is Android 13, does it matter?
I do not know any other way for the particular link you posted, however, this plays streaming audio from Croatian area stations using WebView Radio stream player using these links:
" RadiO LuDNiCA,http://patmos.cdnstream.com:8222/stream?type=http&nocache=120427 \n Radio Nacional Croatia, http://nnc1-bpmmc501.radioca.st/stream \n Rock Radio Beograd, https://edge9.pink.rs/rockstream/ " in the radioStreamsIDLink2 in the app. 
RadioStreamCroatia.aia (224.8 KB)
Did you try the aia? The experimental app works on my Android 13 cell.
If testing with companion app, you cannot close the app, you have to compile your app for this to work.
I've been trying to do this with my app to see if it works like this.
closing forms is not currently supported during developed
What should I do, does it have anything to do with the android version since the app itself is inventor android 5+ or there is no way to solve it, thank you?
Show screen recording of the concerned part.