s rosegarden som vobec nerobil ale skusim pomoct. kukal som na rosegarden wiki a je tam takato poznamka:

Rosegarden supports the JACK transport mechanism for synchronising its transport with other JACK applications on the same computer. To activate it, go to Settings → Configure Rosegarden… and check the Use JACK transport box.

pozri, ci to tam mas. inak ma este napada, ci si rosegarden nepusta sam jacka, ardour to takto robi ak jack este nebezi.