What's the use of tantalum resistors in audio circuits?
Tantalum resistors are more compatible with tantalum capacitors. 

You can hear the difference on a clean sustained bass note, where, with other metal resistors, you can hear the electrons shuffling up and down across the galvanic potential between the two metals. With tantalum, the murmur of the electrons is much happier. They do not grumble and mutter as much with tantalum.

I think it has something to do with Fermi levels in the different metals. I found this link: 

Oh dear, it seems I can't post an instant link (good idea, too). Here is the image I found.

You can see clearly the electron's path between the two metals is much noisier.

One must be careful, grabbing info off the web! For instance, in my graphic above, there are a lot of errors. There is something fishy about it. For one, the Fermi levels are wrong for a metal. Here is a corrected image:



In many countries, on April 1, there is a tradition of practical jokes and pranks. This was intended to be an April 1 joke answer. Please do not take any statements in this post seriously! bb