libSDL-1.2.so.0()(64bit) is needed by VirtualBox

trying to install VirtualBox on a RHEL 5.6, I get this error:


sudo rpm -i /opt/oracle/software/VirtualBox-4.2-4.2.12_84980_el5-1.x86_64.rpm
warning: /opt/oracle/software/VirtualBox-4.2-4.2.12_84980_el5-1.x86_64.rpm: Header V4 DSA signature: NOKEY, key ID 98ab5139
error: Failed dependencies:
        libSDL-1.2.so.0()(64bit) is needed by VirtualBox-4.2-4.2.12_84980_el5-1.x86_64
yum provides */libSDL-1.2.so.0
yum search SDL       
yum install SDL

Error Downloading Packages:
  SDL-1.2.10-8.el5.x86_64: failure: SDL-1.2.10-8.el5.x86_64.rpm from ol5_latest: [Errno 256] No more mirrors to try.
  SDL-1.2.10-8.el5.i386: failure: SDL-1.2.10-8.el5.i386.rpm from ol5_latest: [Errno 256] No more mirrors to try.
download it from
http://pkgs.org/centos-5-rhel-5/centos-rhel-x86_64/SDL-1.2.10-9.el5.x86_64.rpm/download/
http://pkgs.org/centos-5-rhel-5/centos-rhel-i386/SDL-1.2.10-9.el5.i386.rpm/download/
(choose binary package)

sudo rpm -i SDL-1.2.10-9.el5.i386.rpm
sudo rpm -i SDL-1.2.10-9.el5.x86_64.rpm