I downgraded to 3.8, which I had saved on my hard drive, but it was too ugly.
So, if you want your PC speaker to ring, but you refuse to put up with the ugly interface of version 3.8, here is the solution:
- Start Skype and make sure that all the checkboxes related to automatic upgrades/updates under Tools => Options => Advanced settings are cleared.
- Download the latest available build of version 4.1. I downloaded Skype 188.8.131.52 from OldApps.com.
- Scan the downloaded file with an anti-virus just in case.
- Uninstall Skype 4.2.
- Install Skype 4.1.
- Start Skype and check the checkbox Ring PC speaker under Tools => Options => General => Audio settings.
- Check again that the checkboxes under Tools => Options => Advanced settings => When a new version of Skype is available... are cleared.
In the future,
- if you feel the urge to upgrade, first ask yourself why;
- if there is a valid reason to upgrade, do not upgrade from inside Skype; download the installation file instead;
- make sure you have the installation file of the version you are currently running in case you need to revert back (bear in mind that you may or may not be able to revert as smoothly as described above).
On a more "philosophical" level, the moral is that, when it comes to software, always be conservative. Never assume that the latest is the greatest. And, yes, don't fix it if it ain't broken.
P.S. Since this post was published, I have successfully downgraded Skype from version 5.x to 4.1 and 4.2 several times. I find the interface of Skype 5.x extremely annoying. So, on my desktop I stick with Skype 4.1, and on my laptops (where the "Ring PC speaker" option is useless) - with Skype 4.2.