When I build it on my machine, it uses libsamplerate, as evidenced by: $ ldd /usr/bin/k3b | fgrep libsamplerate libsamplerate.so.0 => /usr/lib64/libsamplerate.so.0 (0x00000036a2400000) When I do this on the version from a repository, I get: $ ldd /usr/bin/k3b | fgrep libsamplerate <Blank line> I've been looking through the objects and libraries in the various k3b packages to find out how they do sample rate conversion, so far without success. The version is k3b-0.12.17-1. Questions: (1) Why does my build invoke libsamplrate.so, while the one from the repository doesn't? (2) How does K3B as released from the repository do sample rate conversion? Thanks - jon