If I recall correct, initially they were going to produce a range of modules for the Mojo. The first they talked about making was a Bluetooth module. Then they went silent, and only said they were working hard, and along came Poly. Badaahh surprise! (I hoped and requested that they make an SD-card player only module, as one of modules. Hoping clearly to save massive bucks. That was before Poly was announced.) Funny thing is, even the Poly is kind of worth it, just to use the SD-card player. When you factor in sound quality. .. I still ended up with a DAP though.