There's a good version of Jordan Am a Hard Road to Travel on Bluegrass at Newport by Tex Logan, Eric Weissberg & The New Lost City Ramblers. It doesn't have any racist language. (Though a couple of lines of the verse starting "Ham and cheese are getting pretty scarce, down where I've been boarding" or words to that effect are completely blurry.)

It's a hard one, this. Do you sing songs that are designed to sneer at subjugated people, even if they have a nice tune? For instance, would you sing Croppies Lie Down happily? This is a song mocking the 'croppies' (damn leftist liberals who were murdered en masse after the 1798 Rising in Ireland)? The playing of this song caused a massacre at least once.

Oh, Croppies ye'd better be quiet and still
Ye shan't have your liberty, do what ye will
As long as salt water is formed in the deep
A foot on the necks of the Croppy we'll keep.