I've uploaded a small clip to FTP that has the problem.
/Members/gibman/rtsp_resume_audiochange_problem/

std def 720x576., mpeg2, dvb-t
audio; 2ch ac3 audio, 2ch mpeg1 layer2 audio
no subs

I'm almost sure its a tsreader problem.

Seems like all recordings from that channel (TV2) has the same bad behaviour.
If I edit the recording using some TS editor, then the new edited TS file has no problems.

Ok how to test this.
1) Import the recording from the FTP above.
2) Use a multiseat client (or c:\usertsp.txt on a singleseat, should give the same I think)

The bugs;
3) Now try to resume the recording, it pauses the video at the first frame.
A step seek clears it.
4) When recording is playing, try and change audio channel to the next stream.
Video freezes, and a step seek clears it.

Logs attached.