The final demo version (will not be updated further) and the experimental 0.9 are uploaded

In the experimental version, as in the demo, all the bugs you found were fixed and the sound was fixed, now it is normal.
Also, user data is now saved in the user directory, which means that settings, records, etc. will be saved with a restart. I will mention all of this and in the future full developer diary 0.9.

0.9 is just more stable and cleaner from bugs, slightly tweaked the balance, but not significantly.