Skype has been working fine for a fair while, but has (in the last week or so) stopped making notification sounds. Normal audio for calls is fine, but the ringtone and other alerts are now not making any noise at all.
The cause appears to be that the wav files are all missing.
I've not deleted them - at least, not knowingly - and not made any changes within Skype. I ran an update and upgrade to my whole system recently, so the cause is likely there, but I have no idea where to start looking to sort this out.
Is it just going to be simplest to download the sound files and set them all manually, or is this a known issue with another fix?
Edit: Forgot to say - the sound files are normally (I believe) in
/usr/share/skype/sounds, but I don't have a
/usr/share/skype folder at all.