Actually, I've managed to find a way to edit the TS files and get them playing over PS3MediaServer to my Samsung TV.
Going by the previous pages, I'm not sure if anyone has found a simple way, so I'll detail what I've found out, just in case it helps anyone else. Getting your app to work Drutt, would save a bit of work and make the whole process simpler however.
Ok, you need
TMPGEnc MPEG Smart Renderer 4, its not free sadly, its $69.95 - this is why the app refereed to above would be great, it would remove the need for this program).
Ok, you need to get the TS file off the Humax box by removing the enc flag using
Foxy & copy the recording to the USB drive and then FTP it to your PC.
Then load it in TMPGEnc and cut out the bits as required (remember to remove any audio descriptive tracks you don't want - although these can be muxed into the MKV if you want). It won't let you output it as an MKV because of a format violation (although it works perfectly fine as a MKV in the end), so you have to output it as a m2t file.
When setting the output settings for the Audio you may need to change the format to Dolby Digital from AAC as it suggests not all players like AAC sound. Certainly this is the case in my experience, so I just change it to Dolby Digital (AC3). Set the number of channels as required (either 2 or 5.1) and if you have two channels set the Bitrate to around 256, if its 5.1, set it to 448 (you can do 2ch in 448 as well if you wish, but chances are its a waste of bandwidth as 2 channel AAC doesn't tend to be above 200, let alone 448 in my experience).
Once this has been done, rename the .m2t file to .ts and load it into
TSMuxer GUI (this is free)
Select the DeMux option and click start demuxing.
With the two (or three if you kept any additional audio tracks) files you get you need to use
MKVMerge to create the MKV File.
And this works just perfectly with my Samsung ES8000 TV. I'll test it with the PS3, but I'm not expecting any issues.
And hey presto, you have a perfectly edited & trimmed recording from your Humax HDR box.