One thing you’ll need to look out for is whether or not the speaker is powered. The Sansa players don’t push out enough power through the headphone jack to power a speaker very well, this is why the audio will cut in and out. What you’ll need to do is find a speaker pillow that takes a 9 volt battery or a few AA’s. The batteries should last for quite awhile and will help the sound quality by eliminating the skips.