Unblock background

[Hyltont]

My church services are recorded in a room seating about 20 senior citizens. Our services consists of singing (with music) and scripture reading. There is also a sermon which is presented to the residents during this recording. The service is recorded to Zoom cloud that it may be viewed later by other residents or linked people. 

My problem is, when I playback the recording, the singing, music, and reading does not play and some portions of the sermon is not clear or not heard. How can I set the audio where I can hear the whole service played back in the recording?