Ive used Omvana since it was released, but it seems the more content there is the slower it is to load and search through the library, both in the store and what Ive downloaded. Setting a primary vocal and secondary sound track used to be easier with more control in pairing as well and setting their respective volumes. Lots of potential with this app, but at the moment its a challenge to use due to its sluggishness and lack of user control. Looking forward to its next incarnation.