@TheMburu, to add what @James has already added. If the PC is not suited to your scenario, the only option I can think of is that you buy an external DVD player with all the format features that you are looking for, this will be much cheaper. Then connect to the AUX ports on the DAV amp. Prefer if you get a Sony DVD player so that you can use the same remote control. :-)
 
@James, the problem with a PC is the fan noise and it can get pretty loud. There's no remote control for a PC either so its bit annoying to use. The other problem of a PC being used in the HT scenario is power consumption, boot options. I think there's a place for the PC, and its not in the HT environment. :-)
 
Rgds.