Sound problems after upgrade FC6 to FC7

[lee]

PC is a Dell inspiron 600m lap top.
RealPlayer says device is in use. It's not.
Mplayer, VLC Xine say they have missing LIB files ether libdts.so.0 or 
libcurl so.3
Reinstaled RealPlayer no help
Tried to reinstall MPLAYER  says missing libdts.so.0
Rhythmbox works fine plays podcasts and local mp3s
Videos on the web play fine and the sound is fine.
Please help I miss my online radio.

Thanks Lee