I want to play some audio file to both the legs might be same or different, 

1st option:

i can do it by using uuid_bridge, audio file playback can be done using uuid_broadcast or sched_broadcast with +0. But using uuid bridge, the audio is not flowing correctly from B-leg to A-leg. while the audio flows flawless other ways(A-B leg). Also the audio file that i am playing to both legs are perfectly heard with out any problem. and after the audio playback, its the same audio flowing issue from B-A leg.

2nd option:

or i can schedule it using sched_broadcast, if i am using freeswitch.bridge which is blocking in nature. Using this approach, There is no complaint of audio between call legs or playback of audio file.

Hence i wanted to understand which bridge is better to use? and what is the difference between the two bridges? 

Any help is appreciated.