Since TotalMedia was almost always bundled, look for the CD sleeve or a sticker on your TV tuner hardware. The key is usually printed there.
Instead of risking your digital security for outdated software, consider these modern, more powerful, and completely free alternatives: Arcsoft Totalmedia 3.5 License Key Free
Are you trying to get a specific or old capture card to work on a newer computer? Since TotalMedia was almost always bundled, look for
Sometimes, manufacturers like Hauppauge or AverMedia provide specific versions of the software for their legacy hardware owners on their support pages. Modern (and Free) Alternatives Since TotalMedia was almost always bundled
If you specifically need this software—perhaps to use an older TV tuner—your best legal options are: