There are a lot of good quality resistors now for audio applications. Aside from the type, the physical size will make a difference in regards to noise. Whenever possible, use the largest physical size possible. Replacing 1/2 watt resistors in critical areas with 1 watt or better yet 2 watt, will help cut down on noise.
Choosing the right type for the right application is important.
Some of the better audio application resistors I use most often are Mills which are best for cathode, grid stops, screen grids and other areas where a non-inductive is required, Decent wirewounds such as the Dale/Vishay RW or CW series are very good in the signal path (very minimum inductance if the leads are kept very short) as well as the dale/Vishay RN series metal film which have proven to always have very tight tolerences.
Riken resistors are excellent but since thet stopped production, they are becoming harder to find and more expensive if you do. I usually reserved these for Grid applications.
If money was not an issue, I would use Audio Note 2 watt Tantalums just about everywhere.
Wirewounds will be the quietest followed by metal films. Carbon film, carbon comp and tants can sometimes have a little bit of noise associated with them (their quality can sometimes determine this) but well worth it in my opinion.