I think the audio in the video released on YouTube by Rublesdfdf is the highest quality. You can find the better version on dailymotion but the Audio is the same. The song is playing quite quietly in the background so even if it was isolated it would still be hard to hear.
I also think this song is not a demo. It was recorded in the studio with all the other album tracks as we saw in Making of meteora. I believe it’s a full complete song, but as we heard Brad say in the making of meteora video “Sometimes Mike or Chester can write a chorus that’s a really great chorus, but it’s not the greatest chorus. I think that might have been the issue with the track was that it was good, but it wasn’t the greatest and it made it very far in the recording process but was cut from the album. Since around 15 songs were recorded for Meteora, only 12 songs made it (Foreword makes it 13 but come on, it’s a 13 second intro not a song). So about 3 songs were unused for the album. “Thoughts that take away my pride” is very clearly one. A.06 is likely another one and possibly got its name changed. (A.06 was likely a working title). And the third is just unknown, possibly that song we saw rob recording drums on in the making of meteora.