The Salsa Rhythm Machine runs on Windows 7, Windows Vista, Windows XP, and all versions of Mac OS X.
You can download this program and play with all of the features before ordering.
PayPal is part of eBay and does a zillion transactions every day. Many companies now offer a PayPal payment option, which you should use whenever available. PayPal does not give out your credit card info to anybody, including us. When you pay with PayPal, you only have to trust one company.
Like thousands of other software companies, we do not ship our software on CDs. You can download the software from our website whenever you need to. We do not make "trial" versions of our products. Rather, our software will work in a limited fashion until it is registered with a key that you purchase from us. So, there is only one version of the software.