Hello Juergen!
1.) According to our records you have the Bassoon 2 and the Woodwinds 2 standard collection (amongst others). So in order to get the Clarinet in Bb 2 standard for half price, you would also have to complete the Woodwinds Bundle standard (with Woodwinds I standard and Special Woodwinds standard). All details about the introductory offer can be found here:
http://www.vsl.co.at/en/News/Special_Offer_2015-04
2.) We have recorded over 200 different Multiphonics based on the book "Muliphonics für Klarinette mit deutschem System" by Gerhard Krassnitzer. Please understand that we can't offer fingering charts to such an extent. If you happen to have this book, I can send you a detailed chart which specific multiphonic number from the book is mapped to which key though.
Best,
Andi
Vienna Symphonic Library