Any appropriate crypto wallet can serve as a storage option for AUDIO tokens, with the hardware ones being safer, while the software wallets are generally cheaper. Any of the exchange platforms which support these tokens can be used as a storage option, but not that this would mean your tokens would be controlled by a third party. This has led to several traders avoiding exchanges as their preferred storage option. Know that tokens are usually spread out among a few different storage options by more experienced traders, since this way they can avoid risking them all if anything goes wrong with one of those options.