My dad made a Vsqx to Ust converter, it now works with multiple tracks.
Download link: http://www.mediafire.com/download/y1853eld4b2trz1/convp.b01.exe
There still might be bugs.
Vsqx in kana won't work because the version of Delphi we used doesn't support Japanese.
This doesn't support V4 VSQx. I can write another one for V4 but there's already a plugin for that.