Synching to Iphone

[cmelrasippo]

When i try to synch my songs to my iphone to make them play offline for traveling, they always start synching from 0 and it takes hours. How to i keep the songs available offline after i've synched them once already and just synch the new ones?  I don't know why spotify doesn't keep the songs i've already downloaded for offline use.

[MichaelJerzak]

hmm, they should stay offline, unless it crashes or you uninstall the app.