Aspi is available/installed on windows 95/98/me. But it is not installed on nt4/2000/xp. These latter os's DO support what is called spti, which is very close to aspi (only better). So a "good" application should allow the use of both.
If you have nero, you can copy wnaspi32.dll to clony/system directory. It is an aspi -> spti "converter" for winnt.
Also, Aray scanner is one of these "good" apps, as it works with aspi and spti