How do i upgrade to 10.6.8 - Kodak EasyShare C875 Digital Camera

Your machine is very short of power required for win 10, I would like to see at least 8 GB ram, and a faster processor, yours is at the bottom of tests. Perhaps you should look at a new machine with win 10 installed. You cannot upgrade xp to win 10. You will have to purchase a win 10 license, you missed the free upgrade period.

There is no media player with Win-10. If you have upgraded it recently, after some time; means within 48 hours or so; an upgrade will be done with your system. An upgrade will be send my Microsoft. it will contain the rest. So wait for it. The upgrade is automatic, and will be installed to your system. After the installation, you'll get the sound. Go to the system tools, and be get ready to get the upgrade, by setting it to 'Receive the upgrade automatically"
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Here's a link showing you how to upgrade to 10, How to Upgrade to Windows 10 Microsoft