  The production and decay of vector mesons ($\rho, \omega$) in pA and AA
reactions is studied with particular emphasis on their in-medium spectral
functions. It is explored within transport calculations if hadronic in-medium
decays like $\pi^+\pi^-$ or $\pi^0 \gamma$ might provide complementary
information to their dilepton ($e^+e^-$) decays. Whereas the $\pi^+ \pi^-$
signal from the $\rho$-meson is found to be strongly distorted by pion
rescattering, the $\omega$-meson Dalitz decay to $\pi^0 \gamma$ appears
promising even for more heavy nuclei in $\gamma A$ and pA reactions.
Furthermore, the influence of nucleon and kaon/antikaon potentials on the
$K^\pm$ yields and spectra in pA collisions is calculated and compared to the
recent data from the ANKE Collaboration.
