I've tried upgrading the package from extras with no luck:

~ $ rootsh apt-get install --reinstall libsdl-ttf2.0-0=2.0.9-1maemo3
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
libsdl-ttf2.0 libsdl-ttf2.0-0
The following NEW packages will be installed:
libsdl-ttf2.0
The following packages will be upgraded:
libsdl-ttf2.0-0
1 upgraded, 1 newly installed, 0 to remove and 41 not upgraded.
Need to get 2492B/16,0kB of archives.
After this operation, 28,7kB of additional disk space will be used.
Do you want to continue [Y/n]? y
Get:1 http://repository.maemo.org fremantle/free libsdl-ttf2.0-0 2.0.9-1maemo3 [2492B]
Fetched 2492B in 0s (9690B/s)
(Reading database ... 27252 files and directories currently installed.)
Unpacking libsdl-ttf2.0 (from .../libsdl-ttf2.0_2.0.9-1osso0+0m5_armel.deb) ...
dpkg: error processing /var/cache/apt/archives/libsdl-ttf2.0_2.0.9-1osso0+0m5_armel.deb (--unpack):
trying to overwrite `/usr/lib/libSDL_ttf-2.0.so.0.6.3', which is also in package libsdl-ttf2.0-0
Preparing to replace libsdl-ttf2.0-0 2.0.9-1maemo2 (using .../libsdl-ttf2.0-0_2.0.9-1maemo3_armel.deb) ...
Unpacking replacement libsdl-ttf2.0-0 ...
Errors were encountered while processing:
/var/cache/apt/archives/libsdl-ttf2.0_2.0.9-1osso0+0m5_armel.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)