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VLC starting from 1.0.0-rc1 let you configure the scrobbling to a single,
Open the preferences and select "ALL" under "Show settings".
Then visit Interface => Control Interfaces
Check the checkbox for "Submission of played songs to last.fm"
Open Preferences > All => Interface => Control Interfaces >
Change the Scrobbler URL from post.audioscrobbler.com to what you need
VLC must then be restarted for these changes to take effect.
Open vlcrc file and look for scrobbler-url
Change the line to
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