Yeah, I did that.
Mainly done for Winamp, but with global hotkeys it works also for Foobar2000 and Deliplayer2 (at least).
(insim usage:
When the setup is set up correctly, make an icon (etc) with command line "vcom 64", start the player, start vcom and type /insim 29999 in the game)
With Winamp it can work without global hotkeys (or with them) and it displays the song names in the game.