books on tape -- where you only want to listen once and then dispose of it -- but it seems ridiculous to store anything with replay value on separate, dedicated devices. Needless to say, we can't see this technology going anywhere, but if folks do start giving up their iPods in favor of cases of Playdiscs, we'll have to admit that we don't know as much about consumer preferences as we thought we did. Keep reading to check out the type of battery you'll need to buy in bulk in order to power a bunch of these things...
Playdisc: the single-album DAP
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