/usr/ is in libalsaplayer-dev 0.99.81-2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/alsaplayer/
/usr/include/alsaplayer/AlsaNode.h
/usr/include/alsaplayer/AlsaPlayer.h
/usr/include/alsaplayer/AlsaSubscriber.h
/usr/include/alsaplayer/CorePlayer.h
/usr/include/alsaplayer/Effects.h
/usr/include/alsaplayer/Playlist.h
/usr/include/alsaplayer/SampleBuffer.h
/usr/include/alsaplayer/alsaplayer_error.h
/usr/include/alsaplayer/control.h
/usr/include/alsaplayer/input_plugin.h
/usr/include/alsaplayer/interface_plugin.h
/usr/include/alsaplayer/output_plugin.h
/usr/include/alsaplayer/prefs.h
/usr/include/alsaplayer/reader.h
/usr/include/alsaplayer/scope_plugin.h
/usr/include/alsaplayer/stream_info.h
/usr/include/alsaplayer/utilities.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/libalsaplayer.a
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/alsaplayer.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libalsaplayer-dev/
/usr/share/doc/libalsaplayer-dev/copyright
/usr/share/doc/libalsaplayer-dev/reference/
/usr/share/doc/libalsaplayer-dev/reference/html/
/usr/share/doc/libalsaplayer-dev/reference/html/annotated.html
/usr/share/doc/libalsaplayer-dev/reference/html/classes.html
/usr/share/doc/libalsaplayer-dev/reference/html/dir_3d4e3727d115a35026b2767b8b178da2.html
/usr/share/doc/libalsaplayer-dev/reference/html/doxygen.css
/usr/share/doc/libalsaplayer-dev/reference/html/doxygen.png
/usr/share/doc/libalsaplayer-dev/reference/html/files.html
/usr/share/doc/libalsaplayer-dev/reference/html/functions.html
/usr/share/doc/libalsaplayer-dev/reference/html/functions_vars.html
/usr/share/doc/libalsaplayer-dev/reference/html/globals.html
/usr/share/doc/libalsaplayer-dev/reference/html/globals_defs.html
/usr/share/doc/libalsaplayer-dev/reference/html/globals_type.html
/usr/share/doc/libalsaplayer-dev/reference/html/index.html
/usr/share/doc/libalsaplayer-dev/reference/html/input__plugin_8h.html
/usr/share/doc/libalsaplayer-dev/reference/html/input__plugin_8h_source.html
/usr/share/doc/libalsaplayer-dev/reference/html/interface__plugin_8h.html
/usr/share/doc/libalsaplayer-dev/reference/html/interface__plugin_8h_source.html
/usr/share/doc/libalsaplayer-dev/reference/html/output__plugin_8h.html
/usr/share/doc/libalsaplayer-dev/reference/html/output__plugin_8h_source.html
/usr/share/doc/libalsaplayer-dev/reference/html/scope__plugin_8h.html
/usr/share/doc/libalsaplayer-dev/reference/html/scope__plugin_8h_source.html
/usr/share/doc/libalsaplayer-dev/reference/html/struct__input__object.html
/usr/share/doc/libalsaplayer-dev/reference/html/struct__input__plugin.html
/usr/share/doc/libalsaplayer-dev/reference/html/struct__interface__plugin.html
/usr/share/doc/libalsaplayer-dev/reference/html/struct__output__plugin.html
/usr/share/doc/libalsaplayer-dev/reference/html/struct__scope__plugin.html
/usr/share/doc-base/
/usr/share/doc-base/alsaplayer-documentation
/usr/lib/x86_64-linux-gnu/libalsaplayer.so
/usr/share/doc/libalsaplayer-dev/changelog.Debian.gz