rezound depends on virtual/X wich is blocked my modular X.
Created attachment 78922 [details, diff] patch for rezound-0.12.2_beta.ebuild in uniffied diff format gets virtual/X out, since rezound depends on x11-libs/fox wich already take care of X dependecy.
*** Bug 121633 has been marked as a duplicate of this bug. ***
Committed, thanks.