Not able to play any vedio formet in F 12, totem is already installed

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http://forums.fedoraforum.org – Hi guys, iḿ new to linux. i installed F12, and trying to play mp3 and vedio files, Mplayer fails to play all type of vedio formet as awell as mp3. totom is already installes, as well as ibdvdcs... no use till now. trying to install real player, getting error as below: [root@Ganesha Sandeep]# rpm -ivh Desktop/RealPlayer11GOLD.rpm error: Failed dependencies: lsb >= 3.1 is needed by RealPlayer- Pls help me to resolve issue as mentioned above:mad: (HowTos)