So I have been working on this for a few days and everything is going pretty well. I have two WINTV-HVR 950Q External USB 2.0 HD Tuners connected to my PC. These things are great. Highty recommend them if you are looking for a good easy Tuner for under $100 dollars. I got mine on sale for $70.00. The software provided is OK at best but it is functional. I am using the Vista Media Center with mine for things like recording. The major downside to this, for me anyway, is that when the Media Center records it is in an .dvr-ms file format. PS3 does not like that format. Because of this I have another step after recording before I can stream the video to the PS3. I have to do a file conversion. I have found a tool that will scan input folders and as soon as it sees the dvr-ms file in the folder it goes to work. This is a great program. It works with the DVRMSToolbox as well. This means that as it does the file conversion it will also automatically remove comercials for you. it also has a wide variety of output file types that you can convert to. The program is MCEBuddy. Pretty lightweight except when doing the conversion, It will eat up some cycles. I think that I will have mine do all the conversions over night when I am asleep. I will always be a day behind on my DVR shows but that is OK by me. Alo with the two USB Video Tuners and the Vista Media Center I am able to record two shows at a time. Love that. The only down side is that the dvr-ms files are HUGE. You will need a big disk and I highly recommend having MCEBuddy remove the originals when done converting to conserve disk space.
Also another good media player for the PS3 is the PS3MediaServer. Very lightweight and will play some filetypes that PlayOn will not at this time. Like a DVD ISO. I am still not really happy with the ISO playing as it just selects the first audio track and the first sub track. No choices here. I am still playing with ISO files and hope to come up with or find another solution as I would love to have all my DVD library accesable at the touch of a button.
I will continue to play with this and let you know what I find and what My recommendations are to you. I think that this is going to be a great Entertainment Solution for me and it will save me money in no time at all since I am no longer shelling out $100.00 a month for service.