Read about this on mythtv, and seems interesting. Shouldn't be impossible for the great people on this project to make it a feature in MediaPortal? 
From mythtv:
" -"Timestretch". Though, it's really 'time-compression'. This allows the user to adjust the playback speed slightly, but keeps the audio at the same pitch. If you're recording a lot of shows, timestretch lets you get through them faster. =)"
Regards
Kivlok
From mythtv:
" -"Timestretch". Though, it's really 'time-compression'. This allows the user to adjust the playback speed slightly, but keeps the audio at the same pitch. If you're recording a lot of shows, timestretch lets you get through them faster. =)"
Regards
Kivlok