root@mythtv:/usr/share/mythtv# apt-get install mythmusic
Reading Package Lists... Done
Building Dependency Tree... Done
The following extra packages will be installed:
  libmyth-0.20 mythtv-common mythtv-frontend
Suggested packages:
  mythtv-backend mythweather mythgallery mythdvd mythvideo mythgame mythtv-debug
Recommended packages:
  mythtv-doc
The following NEW packages will be installed:
  libmyth-0.20 mythmusic mythtv-common mythtv-frontend
0 upgraded, 4 newly installed, 0 to remove and 348 not upgraded.
5 not fully installed or removed.
Need to get 0B/16.1MB of archives.
After unpacking 39.2MB of additional disk space will be used.
Do you want to continue? [Y/n] Y
Preconfiguring packages ...
(Reading database ... 64373 files and directories currently installed.)
Unpacking libmyth-0.20 (from .../libmyth-0.20_0.20-0.3sarge1_i386.deb) ...
dpkg: error processing /var/cache/apt/archives/libmyth-0.20_0.20-0.3sarge1_i386.deb (--unpack):
 trying to overwrite `/usr/lib/libmyth-0.20.so.0.20.0', which is also in package mythtv
dpkg-deb: subprocess paste killed by signal (Broken pipe)
Unpacking mythtv-common (from .../mythtv-common_0.20-0.3sarge1_all.deb) ...
dpkg: error processing /var/cache/apt/archives/mythtv-common_0.20-0.3sarge1_all.deb (--unpack):
 trying to overwrite `/usr/share/mythtv/themes/default/welcome-ui.xml', which is also in package mythtv
dpkg-deb: subprocess paste killed by signal (Broken pipe)
Unpacking mythtv-frontend (from .../mythtv-frontend_0.20-0.3sarge1_i386.deb) ...
dpkg: error processing /var/cache/apt/archives/mythtv-frontend_0.20-0.3sarge1_i386.deb (--unpack):
 trying to overwrite `/usr/bin/mythfrontend', which is also in package mythtv
dpkg-deb: subprocess paste killed by signal (Broken pipe)
Unpacking mythmusic (from .../mythmusic_0.20-0.7sarge1_i386.deb) ...
dpkg: error processing /var/cache/apt/archives/mythmusic_0.20-0.7sarge1_i386.deb (--unpack):
 trying to overwrite `/usr/share/mythtv/musicmenu.xml', which is also in package mythplugins
dpkg-deb: subprocess paste killed by signal (Broken pipe)
Errors were encountered while processing:
 /var/cache/apt/archives/libmyth-0.20_0.20-0.3sarge1_i386.deb
 /var/cache/apt/archives/mythtv-common_0.20-0.3sarge1_all.deb
 /var/cache/apt/archives/mythtv-frontend_0.20-0.3sarge1_i386.deb
 /var/cache/apt/archives/mythmusic_0.20-0.7sarge1_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)