We have an upgrade ready for SqueezeBox Server 7.4. This will replace SqueezeCenter that VortexBox is currently using. To preform the upgrade type the following on the VortexBox command line.
cp /etc/squeezecenter/custom-convert.conf /tmp cp /etc/squeezecenter/server.conf /tmpyum updatecp /tmp/*.conf /etc/squeezeboxserver/reboot