Subtitles and OGG in Media Center

Just started today to use RSP and it's great, personally I like it more than SummerDream.

I have two problems in Media Center and I was wondering if there is any solution with RSP:

1. Can SRT subtitle files be used, without crashing? After selecting a subtitle, the receiver crashes in a minute or two. The files I've tried contain only plain ASCII characters, no special chars.

2. Is OGG supported for audio? I have a couple of MKV files with OGG sound and it doesn't seem to be working.