b2b support
Email support@b2b.audio and a person will answer, usually within a day.
What b2b needs
b2b reads the library that b2b for Mac publishes from rekordbox to the b2b folder in your Dropbox. On the phone, connect the same Dropbox account in Settings. Your music stays in your Dropbox and on your devices.
Trying it without a library
On an empty Library, tap Try a sample library. It's five Creative Commons tracks built into the app, with waveforms, beat grids, phrases and hot cues, so you can try every screen. Settings › Library › Sample library puts it away.
Tags and playlists
Tags and playlists you change on the phone reach rekordbox through b2b for Mac the next time it runs. Until then Settings › Changes counts what is waiting.
Your account
Sign in with Apple or Google in Settings › Account to keep tag edits and playlists in step across your devices. To delete your account, use Settings › Account › Delete account in the app, or Options › Account › Delete account on b2b.audio. Deleting it removes everything our database keeps for the account, then the sign-in. To turn off a shared link, use Settings › Shared links; email us to have its record removed.
Contact
Keya LLC, support@b2b.audio