Hi.
“Almost all” means, that some of your files are working?
Or do some files work sometimes and sometimes not?

Can you please connect your phone to your pc and check if the following folder exists:
\Android\data\com.kattwinkel.android.soundseeder.player\files and if it contains some error.log files.

If so, can you please send them to ‘jekapps@gmail.com’?!