Can I get a licence for any format (vocal backing track, karaoke video etc)?

The extended licensing options are only available for the Playback Personalizado section.

The Playback Personalizado is our multi-track, customisable format that's the best fit for any professional usage requiring extended licensing.

You can further customise your Playbacks Personalizados after your purchase while keeping the same licence (it is available for any mix you create).