Fl Studio uses a format for these sounds called Vst or Virtual Studio Instrument. In this guide, I am going to show you how to add a Vst plugin that is not part of the content or stock Vst’s that comes loaded with Fl Studio 12. Makers of Prophet V, Analog Factory, Origin, Jupiter-8V, CS-80v, ARP2600 V, Modular V, Mini V, Brass, Storm, imini, spark, drum. Up To 82% Off FL Studio - Black Friday Deals 2020 3 Limited Time Offer. Download free Flute VST,VSTi,AU,RTAS music software plugins & Instruments.