Syrinscape is a company which produces soundtracks for Paizo's adventure paths. You can download a (free) Syrinscape Player to your tablet or laptop, and then purchase individual soundtrack packs for your game. Check out this video, where Syrinscape demonstrates Fortress of the Stone Giants for the Rise of the Runelords adventure path.
[video=youtube;0m77fchcuqA]https://www.youtube.com/watch?feature=player_embedded&v=0m77fchcuqA[/video]
You get the Syrinscape Player from here (Windows, Mac OSX, Android, or iOS) and then either purchase specific soundsets and soundpacks (which run from $3.99 up to $20) or buy an adventure path subscription for $6.50 per month which gets you every fantasy soundset they release.
[video=youtube;0m77fchcuqA]https://www.youtube.com/watch?feature=player_embedded&v=0m77fchcuqA[/video]
You get the Syrinscape Player from here (Windows, Mac OSX, Android, or iOS) and then either purchase specific soundsets and soundpacks (which run from $3.99 up to $20) or buy an adventure path subscription for $6.50 per month which gets you every fantasy soundset they release.