Now you can view tracks with Google Earth, directly into your browser. No need to download the KML file and then open Google Earth application.
To view a track in 3D, simply press the EARTH map type button, at the top right of the google map (ssved tracks only)
From Google Geo Developers Blog
:
" To view apps written in the Earth API, you will have to download a browser plug-in. Currently, the plug-in is Windows only, and works on Mozilla and Internet Explorer based browsers, including Firefox. We are working to expand the number of browsers, and have announced Mac and Linux plug-ins will be released in August. "
Bug: after viewing a track with Google Earth plugin, next tracks (usually loaded with AJAX calls in the same page) aren’t displayed correctly; firefox also signals a lot of javascript errors.
To avoid this, after viewing a track with Google Earth plugin, press menu TRACKS in order to reload the page.