It's not the technology that's at fault. It's a corporate problem: they now need time to prepare marketing materials and place ads. Labels got burned years ago placing ads for cast albums that never happened when the shows flopped. AS we all know in the case of Lestat, a cast album can sometimes be made but sit on teh shelf for years waiting to be edited, mixed and released.
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