Play music direct from Sandisk

We copied the music folders onto the sandisk, then we do the following:

* put sandisk in iPhone 

* go to play music in iXpand

* press play on song

* song plays and then stops and nothing further happens

We created a playlist on iXpand to fix then

*hit shuffle

*song plays, finishes and nothing further happens

*don’t hit shuffle, just click play on song in playlist

*song plays, finishes and nothing further happens

Couple of things - I read that you need to have music in the same folder but even if I have 4 songs in one folder - it will not progress forward to the next song.

So - you seriously are able to play a song and then your iXpand goes ahead and plays the next song without you having to do anything? Maybe we put the music on the sandisk the wrong way? Are you playing the music right from iXpand or are you playing it via itunes, sound cloud or something else? Because that is the other thing, we want to not have to be connected to the internet to play.

Again, I appreciate your replies because I would love to think I did buy the right thing and it can do what we want. LOL