Sorry, here is the line that add a Track to the list

for (int countForTrack = countTracks; countForTrack > 0; countForTrack--)
{
currentTrack = tracks[countTracks] as IITFileOrCDTrack;
countTracks--;
TracksOniTunes.Add(new Track(currentTrack.Name, currentTrack.Artist, currentTrack.Album, currentTrack.SampleRate, currentTrack.BitRate));
}

Hy @ everyone, i have a Little Problem:

class Track
{
string Name;
string Artist;
string Album;
int SampleRate;
int BitRate;

public Track(string name, string artist, string album, int sampleRate, int bitRate)
{
    Name = name;
    Artist = artist;
    Album = album;
    SampleRate = sampleRate;
    BitRate = bitRate;
}

}

Now i want to editing some values foreach Track:

List TracksOniTunes = new List();

foreach (Track item in TracksOniTunes)
{
// SampleRate = 0

}

Later, i have a Switch and I need depending on different values ​​to compare from the List

switch (criteria)
{
case "":
break;
case "Qualität":
break;
case "Album":
break;
case "Compilation":
break;
}

My Problem is that i can't editing some items? I can not access the objects. Is there an easy way? Thanks for help.