There are a few ways. One would be to get a VST host/bridge for Foobar2000 and then grab the correct VST version. The other would to get a Winamp DSP bridge for Foobar2000 and grab the DSP version.
This is the old Winamp DSP bridge for Foobar2000 I used to use, but it might be kinda buggy.
https://wiki.hydrogenaud.io/index.php?t ... sp_winamp) It'll play declipped and processed audio though.
Good luck!
edit: You can also use the stand-alone version of Stereo Tool with a virtual sound card such as VBcable.
Install both; set Windows (or Foobar 2000) to use VBcable to output sound; then run the stand-alone Stereo Tool app, go to the I/O and make your Input 1 the VBcable; and finally set your speakers as the HD output. This makes Windows (or just Foobar) send audio to the VB cable, which sends audio to the stand-alone Stereo Tool app, which sends audio to your speakers.
If you need to reduce the latency, lower the Buffer Size/Diversity Delay in the output section of Stereo Tool; expand the
> glyph to find it