Rolesound is currently in beta and costs $14.99. After the beta, the price will increase.
Yes. You just need to install the Chrome app and log into your account. But please encourage your GM friends to buy it if they use it :)
No. Rolesound does not upload your sounds to the internet. We are currently working on such a feature (you will need a Google Drive account to use it).
You can install Rolesound on another computer, transfer the sounds using a USB key and re-import them into Rolesound. A transfer feature is currently in development. If you would like to be notified when it's ready, let us know.
Rolesound is compatible with all the formats recognized by Google Chrome: .ogg, .wav, PCM, .aac, .mp3 and .aac. There is an up-to-date list available here. A sound format conversion feature is currently in development; in the meantime, try the excellent media.io for all your sound conversion needs.
Just send us an email at firstname.lastname@example.org. We love to talk to you and help you :)