Demo
Prebuilt players
Let's see how well it performs by yourself. You can download built players for some platforms here even before purchasing this package.
The demo is basically a bunch of buttons, each button represent one C# method call on the IntroloopPlayer.
A column of white buttons on the right represents Play method on various IntroloopAudio, each with possibly different settings in it. I have provided some short songs and 1 longer song for you to test. (Song with A is meant to be followed by song with B.)
Dark panel on the left provides some debug informations. Remember that 1 IntroloopPlayer = 2 IntroloopTrack = 4 AudioSource.
Checking Use Fade will use fade parameter on Play on button push, with fadeTimeSeconds argument adjustable with slider. You can test the transition between different playback mode with and without fades. Colored button does what it says.
"Remember and stop" button will remember the time before stopping. Any next audio you play will start from this time number. To reset the remembered time, use the regular Stop button once.
If you are not using touch device, you can also press letters in the bracket on your keyboard to activate button. Feel free to mash and stress test Introloop!
Demo scenes
If you bought the plugin, you could use the /Samples~ folder in the package. You may see it in a zipped form Samples~.zip right now because Asset Store currently do not support publishing unimported folders, so please unzip it first. It contains the same 3 scenes as that prebuilt player.
With Unity Package Manager (2019.1+)
After unzipping Samples~.zip, then take the package out, then use UPM to link to the package, you can see the import samples button. Press it and you will get the sample in your own project. You may read this for details how it works.
After, you will see a folder chain Samples/ appearing in your project. It is wrapped nicely in a package name and even in a SemVer version of the package. This is actually in your game project, as opposed to the package which could be linked.
After you are done you can safely delete the whole imported Samples/Introloop, all in one place without worrying "is there anything else to delete?".
This is how Samples works in modern Unity. They will stay hidden in the package (/Samples~ folder of the package), until you want to see them by importing to your game.
The plugin package itself can still be linked via UPM without polluting your game's Assets folder, only the samples requires importing. In a way this shows that the sample works from a user's perspective. (i.e. "you can do this too")
Without Unity Package Manager
After unzipping Samples~.zip, Unity skips importing /Samples~ folder because of trailing ~, which is great so you won't have to spend time importing unrelated assets. You can go inside here with your file explorer in your OS and copy the content out to your project.
Introloop in the real world
If you want to see Introloop in a real application, my own game Duel Otters which you can freely download to your iOS/Android device is heavily powered by it. Introloop has gone through many frustrating bug fixes throughout this game's development so I am quite confident now that it is working well.
In that game all BGMs are Introloop, and the actual length is quite short (only 5-10 seconds) but with Introloop they sounded longer than it actually is. This is great because I can conserve space while still having many songs.