Short answer … No
Really long answer … request comes up from time to time and the Roon team always replies that it does not fit their vision for the product and will not be implemented. Recent quote from Danny Dulai, COO of Roon:
Given a scale of 1 (totally open to change) to 10 (firm like we are on UPnP/DLNA or folder browsing in Roon), see our flexibility below.
On the subject on themes and colors:
*** no custom colors: 9**
*** no more themes for the sake of aesthetics: 5**
*** no more themes at all: 3**
*** altering the current themes to be better: 1**
On the topic of global user-scalable fonts:
*** not happening due to technical limits in how Roon is currently implemented: 10.**
*** happening soon: 9**
*** not happening ever: 1**
I would say folder browsing is NEVER going to happen.
Tim