Get a vinyl rig! Problem solved! Everything will sound better, not just ZZ Top. Stevie Ray, Robert Cray, Albert King, all of 'em. The Rega Planar 3 with the RB 300 and a Grado or Blue Point cartridge, for example, is cheap, and killer. There are other record players out there that sound great and can be had for about $1,000. I'll bet you can find all those records pretty easily and for $5 each. You shouldn't spend another nickel on equipment until you fix this hole.