How to jump to the current playing song in foobar?

You could also double click the status bar (if the track is still in one of your playlist; that's not always the case with playlists generated automatically or by browsing...)

From the foobar2000 FAQ:

How do I make the currently playing track to be selected (highlighted) and stay always in view?

Enable “Cursor Follows Playback” under main window's “Playback” menu.

The Cursor follows playback preference messes with me sometimes when I'm organizing a non-active playlist or doing other tasks. I've made a keyboard shortcut to go to the song being played only when I want.

• Open the File menu
• Open the Preferences window
• Click on Keyboard shortcuts
• Click on Add new
• Use the filter to find the View → Show Now Playing setting
• Assign it to any key or key combination you want. The below screenshot uses CTRL + J as a shortcut for it: