Ability to control computer sound and microphone input independently of each other

It would be great for zoom hosts to be able to share computer sound and speak at the same time.

Audio sources would be decoupled so users could control each audio source separately (I.e meeting participates could listen to host computer sound @ 20% or and hosts voice @ 80%.
Peleton has a similar feature where participants can listen to change each audio source independently of each other

This would be awesome, and I would love to see it on the roadmap!