you can use the ASP round() function.
the round function takes 2 arguments, the number to round and number of decimal places.
in the context of displaying an eCart price:
<%=WA_eCart_DisplayMoney(BlueSkyMusic, WA_eCart_DisplayInfo(BlueSkyMusic, "Price"))%>
using the round function would look like:
<%=WA_eCart_DisplayMoney(BlueSkyMusic, round(WA_eCart_DisplayInfo(BlueSkyMusic, "Price"), 2))%>