Hello.
I've looked at the four libraries you've mentioned.
They all have the following characteristics
1 Basically no website represents them, so it's hard to hear them except for Fifth Floor Production Music Library, which is represented on newbeatbox (and even then, there are quite a few albums missing, at least not the ones you suggested) The other three libraries I've searched the internet for are not represented, so you have to own the CDs to hear them.
2 These libraries are more or less closed or the rights have been bought, so if someone has their CDs, they don't necessarily want to share them because they are paid for, unlike other albums that can be downloaded through the internet or shared by others.
3 even if the forum has friends have some sound quality I think most of them are MP3 WAV / / FALC very little
To sum up, these albums of yours are very difficult to get, so please pray!