My wife has a Terastation at home. So that's a possibility. But she needs access to her music inside buildings (where she works). Most of these places do not have WiFi, and even cellular data could be a problem inside the buildings.

In addition to that, she is probably not going to go with an expensive 3g data plan. She's just going to stick her T-mob sim card in the N900 and keep her existing no-data plan. At the most she might consider one of the $10/mo data options if T-Mobile let's her do that.

My feeling is that the NAS option won't appeal to her. But a 32GB micro SD card would probably be OK. She would prefer having all her music on one memory card (instead of split between the internal memory and the micro SD card). She has 60 GB of music right now.

I'm just sharing the feedback she is giving me. I'm hoping she gets an N900 (so we'll have 2 in the family).