Hello,
I just found a mantra chanted by the dalaï-lama : maha mrityunjaya mantra. The chant have ben taped by one of his disciples on his approval. The tape is freely distributed as dalaï-lama not want it to be sold.

Here a part of the document included with the mp3 :
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Dalai Lama chanting

Maha Mrityunjaya Mantra

From the Rig Veda

This CD of the Dalai Lama chanting this ancient mantra from the Rig Veda (Maha Mrityunjaya Mantra) was recorded by one of his disciples, with the Dalai Lama's permission. At first he refused, but then he agreed; saying that it must never be sold, it can only be given. If you share it with others, please include this note and ask that they do the same.
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You can get the chant on mp3 format here : (150 mb per hour allowed, file is 70 mb so only two tranfer per hour can be done)
http://hugeuploads.net/download/KGeYhNt4OLLh

Document following it here :
http://hugeuploads.net/download/7vuV9GvgsvvP

A more complete description of the mantra can be found here :
http://www.indoindians.com/religion/maha.htm

I think that some can use this for focus their mind. I'm not yet mediting, I am just begining to understandand what it is, but I think that some may found this useful. Good listening!

EDIT : Tom have hosted the files on his box.net account which have a better speed and bandwidth limitations, see below.