Marble has a route guidance mode that can make use of speakers (pre-recorded sound files) to indicate directions. There are some existing ones to download at http://edu.kde.org/marble/speakers.php and instructions to install them at http://userbase.kde.org/Marble/CustomSpeakers#Voice_Installation and also instructions how to record a custom voice at http://community.kde.org/Marble/VoiceOfMarble.

During Desktop Summit 2011 we've recorded the voice of a native finnish speaker which is available here:

http://developer.kde.org/~tackat/radiotux/marble_finnisch-STE-013.mp3

All turn-by-turn instructions were spoken three times in a row.

Your task is to split the file into separate instructions. Choose the best version between each of the three attempts. The aim is to create a high quality voice set.

Also try to adjust the volume so that it matches the volume level of the other recordings on the speaker page.
Expected results: A full set of high-quality voice recordings ready for usage in Marble for a specific language.
rerequisites: An installation of Marble 1.2 (KDE 4.7). Can be compiled from source code as well. An installation of Marble on the N900 would be nice, but is not absolutely necessary.