I'm a Musician - thats why I bought BIAB - NOT a computer Programmer.
Becoming a computer nerd (not exactly a programmer but a nerd) is EXACTLY what you need to do if you want to advance when working with digital audio. I know because your quoted comment is pretty much word for word what I posted here way back when.
A little history. First Biab HAS NO SOUND OF IT'S OWN. Digest that comment for a minute. It's just a program. It does NOT produce sound. What produces the sound you ask? Whatever midi synth YOU DECIDE TO USE. I'm not talking about Real Tracks now, only midi sounds.
PG wants to set customers up with some basic sounds so when they install Biab and hit Play they hear something. For years that was the Roland VSC. The VSC goes back to the 80's and Roland stopped updating it like 20 years ago. It only works on 32 bit systems while pretty much everybody now is on a 64 bit systems so the VSC is out. What could PG do? First they worked with Coyote to write some code that lets Biab use the very primitive Window's wavetable synth that is part of any Windows OS. Those sounds are very unsatisfactory though. What is out there that doesn't cost anything, as in FREE, that PG might use? How about SampleTank Free? Turns out ST allows anybody to write their own patches and link them up so the HQ patch set was born.
Here's the point though. PG has squat to do with IKM. Totally separate companies. PG can't log into IKM and set up an account for you, you have to do that and it's spelled out clearly in the installation docs that you apparently didn't read.
IKM gives away ST Free in the hope you will like it and then buy some of their pretty good sound libraries. Simple as that.
My point in explaining all this is when it comes to digital audio, the overall market is so small it's up to you to figure this all out. PG gives you a very detailed explanation of how to go to the IKM website and set it all up.
To get back to my main point though about Biab having no sounds of it's own. You're totally free to buy whatever software synth or hardware synth like the Ketron SD2 or maybe a Roland Sonic Cell you want. The sound part is completely up to you. All PG is doing is giving you two things, the Coyote Wavetable and instructions how to use ST FREE to be able to use the HQ sound set that requires that.
Otherwise you're free to go and buy any synth you want.
Bob