if I get short drop outs on a channel (NO Signal for example) the video goes on in normal speed, but after 3 or 4 further drop-outs the sound disappears and the video is in some kind of slow motion. I have to switch to another channel and back to get picture and sound normal.
When I am using vdr-xineliboutput (latest version from svn) with vdr 1.7.0, I am also seeing the sound often disappear when I watch tv over wlan, while picture looks ok. Sometimes the vdr-sxfe is able to fix it itself after a some seconds of waiting, but usually the fastest way is to re-switch to same channel
Mika