ex503 watching videos from pc

[perhel]

Hi All
New to this so please forgive me if the question has already been asked elsewhere, I've looked around but couldn't find anything that matches.
I have a number of movies on my PC (windows 7) that I recently realised I could watch on my TV (kdl 32ex503) but I have a couple of issues I can't fathom.
1. The file name isn't as it appears on the PC (I think the file name shown is the import name)
2. The films don't appear in alphabetical order.
The plan is to load up the kids movies to the PC (or a NAS if I can talk myself into getting one) and it would be really awkward not to access them in alpha order.

Thanks
Helen

[Nielsen]

I'll recommend Homestream as media server instead of windows media player. Sorting is here in alphabetical order and media codec support is better.

http://community.sony.dk/t5/Blog-News-from-Sony/Homestream-Media-Sharing-from-Sony/ba-p/1262890

I can also recommend a NAS solution, but then other media servers are used ex. Serviio, which Homestream are built upon.