Well, it got panicked yesterday after replacing with the daily build, and left it all night. Replaced with the stable 3.15 and I have tried to reproduce the same song that made it panic but apparently now it is fine?
I am unsure what did provoke the panic, if someone tell me how to extract any log that might be useful for developers I am happy to get it done.
Curiously, every time I turn it on it shows writing tag cache, which it didn't before.
I have also removed all song with non-ascii characters in their filename now.