In the "updated" version of Company, Bobby is bisexual. Not Quite.
Bobby admits to having had a homosexual experience. That does not make him bi. (Many straight men have had same sex eperiences, it is NOT that uncommon!)
However, Peter (Susan's husband) tells Bobby he has has several experiences with other men (the new script doesn't state that this was the reason that Peter and Susan divorced but are still living together, but it offers a clue that wasn't there originally.) So, it would seem that Peter is bi.
Cast albums are NOT "soundtracks."
Live theatre does not use a "soundtrack." If it did, it wouldn't be live theatre!
I host a weekly one-hour radio program featuring cast album selections as well as songs by cabaret, jazz and theatre artists. The program, FRONT ROW CENTRE is heard Sundays 9 to 10 am and also Saturdays from 8 to 9 am (eastern times) on www.proudfm.com