[Kindle Fire Q&A, Help & Troubleshooting] Edw590:
UPDATE:

I've uploaded complete instructions for everything about this along with more voices - if anyone would be interested and not understanding the instructions I've put here along with others' instructions (I perfectly understand if you don't understand what I wrote, as it was shown to me that it's REALLY confusing from someone who came from outside of the chat XD). And it's here, on my MediaFire account, along with all the voices and another thing to edit the voices' dictionary: https://www.mediafire.com/folder/1hprxlymfudhl. This was made because I posted a Reddit thread about it, so I thought in putting here the link for it too. The thread is this one, in case anyone would like to know: https://www.reddit.com/r/Android/comments/i3iaj6/ivona_tts_voices_for_android/.

---------------What was here before which doesn't matter anymore since the above link has a PDF with EVERYTHING explained---------------

Also, just to clear some doubts around here, it's REALLY easy to put this working. 5 or less minutes. You just copy the files on the MEGA link above to SD Card root/Ivona (you create Ivona folder in the root of it). You copy the eng.usa.salli to there. Cool. Now, you DON'T need voice_en-Us_salli.dat or voice_en_us_salli.dat or whatever. That file is NOT needed (at least it's not with me) - though, if for some reason you want to know, Sage said it's just a copy of lang_en_us.dat renamed (so I thought it wouldn't be needed and after deleting it, it's still working. Even reinstalled to be sure and it works without that file which is just a copy ("voice_en_us_salli.dat is just lang_en_us_salli.dat renamed." - Sage). Then rename the lang_en_us.dat to lang_en_us_salli.dat. Now install the APK, and do as Sage said:

Also, select the voice you want in the Language option inside Ivona TTS. Don't select System Language. You can have 2 or more voices, just install all and select the one you want through the Language option (I installed Brian and Cristiano and they're both working 100%!!!). Then select another voice and then select Ivona again if it's grey. It will stop being grey after you do that (it reloads the files, I think). Done. Hope this clarifies the thing haha.

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About other voices, I just tried various combinations of the Brian (PC version) files with the files here, even editted them to put all "salli" instances to "brian" inside them. Nothing worked. No way to put other voices with these files. I even went to get lang_en_gb_brian.dat, but it didn't work (btw, of course, I copied vox_en_gb_brian22v too - you just need to have IVONA 2 Voices installed on the computer). Though, even after infinite renames and editting the names on the files, nothing worked. The last thing in my mind is the dll file which is here and which I have absolutely no idea how to convert from .dll to .so without the source code (StackOverflow says I need the source code and it can't be done without it). Also, I've no idea if IVONA 2 Voices can be installed on Linux, but I don't find anything about that either - because DLLs don't work on linux, but SO files do. So.... If anyone knows how to do this without the source code or has an installation for Linux with those files or simply has the files deleted from 4PDA, would be cool if they could be posted. But at least Salli works. The only voice I found from PC working on Android. The other ones maybe need the DLL converted to SO, I don't know.

EDIT: I wrote this with IVONA 2 Voices 1.6.63 in mind, but I think 1.6.76 is better since the file names are more like the ones on Android (the vox file ends with an "i" on 1.6.76 instead of a "v" on 1.6.63).

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Cheers!

PS: If the MEGA link goes down some day, I can reupload the files. Just say something. I keep everything in a private server. I never delete these hard to find things haha.

EDIT:

Just register on the 4PDA site!!! The links are all working!!! Take some time and patience and look on this https://doorsgeek.blogspot.com/2015/08/4pdaru-loginregister-captcha-tutorial.html and this https://i.pinimg.com/originals/a7/4f/8e/a74f8e235d5f8573cb29c969c357664a.gif. I'll be downloading everything there in case I or anyone else needs anything, even though I only need one voice. If anyone would need when the files are no longer there or something, I could provide them.