Latest Free MP3 stream downloads

In the streaming player of the 50 mp3s, a few questions:

Does the playlist change ?  if so how often ?
Some tracks only play for a minute or two, why ?
Is there download capability as the heading suggests ?
What is the stream quality of the player, bit rate etc and are all tracks in stereo ?

There seems to be no track scan  i.e to place cursor/play at any point in the track.

Thanks in advance

Sturoc

Thanks for that info
I just tried again,
BUT this time using the Pop Out Player which does allow one to skip thru the track.
So the player on the homepage does not allow this but the Pop Out player does.
Sounds like a glitch to me perhaps ?