You only need the transport stream file for non native content on the G2 boxes. The recordings are uploaded to a non encrypted partition on the box hard disc. You can play them back direct from usb if you wish.
You access either by the Humax menu Video option (Home – Humax)
Note if you install the custom firmware for the Foxsat-hdr and both boxes are connected to your home network then you can play back Foxsat unencrypted recordings directly using the G2 box built in DLNA client. (Media Share in above menu)
Basically any extra capability provided by Humax extra to the standard freetime ui is found under the Humax menu entry.