CyberLink DVD Player In Ubuntu Store
Fluendo's Windows Media and MP3 codecs for GStreamer can be purchased for about $25 USD to enable legal Windows Media Audio, Windows Media Video, Windows Media MMS, Windows Media ASF Demuxer, and MP3 Audio decoding. Their complete codec pack, which adds MPEG2, MPEG4 Part 2, H.264/AVC, MPEG2 Program Stream and Transport Stream, AAC, and MPEG4 ISO costs about $40 USD.
CyberLink's PowerDVD for Linux enables the legal video playback of commercial DVD movies. The Linux version of PowerDVD also has Dolby Digital Audio support as well as for remote controls. This proprietary software will set you back $50 USD as a digital download through the Canonical Shop.
Now if CyberLink would just implement AMD's new UVD2-backed HD video interface for Linux so that we could experience Blu-Ray movies on Ubuntu...