To make this product as good or better than rekordbox for live performance it simply needs to add more options instead of Soundcloud. I think Tidal DJ is the best package, because for DJs it's not expensive and has the best functionality (Flac lossless, store offline). Tidal has a fairly robust API. Should be not too difficult to integrate if there is already a Soundcloud integration it should us a similar methodology with different endpoints and functions. I would be happy to help dev on this project as well. if you'd like some free dev help on this, reach out to refrakt [at] pm [dot] me