Well, installed Leopard tonight, fired up iTunes and found that Volume Logic was not working. Came to VT and noted that the developer had signed Volume Logic off as 10.5 OK. So reinstalled. Still not luck.

Mailed the company and have just been informed (barely one month after having purchased it) that:

"Sorry, no. VL has been discontinued."

Feel distinctly ripped-off.

So, folks, do not buy this. A real pity. Was a wonderful add-on to iTunes. Back to Audio Hijack Pro.

Steve J