Great app but after the update messes it up!!

One of my favorites app I daily use it but now after the new update I guess I wont no problem more, now you cant be able play along with the song if you do the music shuts down one you open this app and if you open the app first then in multitask play the music this app turns mute when you start playing the instrument. Like cmon you gonna do something worth it do it right, till you dont fix I wont give a better rating!! Before I thought it was worth the money now it doesnt please fix ASAP !!!!

Jeiivy about Simple Drummer, v2.30