SoundBoard playback runs out of memory

[robertjamison]

Reposted from #16:

Unfortunately, after a bunch of played sounds, it stops working. I tried if it is a special soundfile that does not work or a file after that it stops working, but nothing.

`Level initialized with level number: 1

Playing sound: START_GAME_SINGLE_ELEMENT from resource: files/575387__henrygillard__card-sounds.mp3

Playing sound: CLICK from resource: files/678248__pixeliota__mouse-click-sound.mp3

Playing sound: CONFIRM from resource: files/637109__ciapaqua__confirm_sound.mp3

Playing sound: CLICK from resource: files/678248__pixeliota__mouse-click-sound.mp3

Playing sound: CONFIRM from resource: files/637109__ciapaqua__confirm_sound.mp3

Exception in thread "DefaultDispatcher-worker-1" javax.sound.sampled.LineUnavailableException: line with format PCM_SIGNED 44100.0 Hz, 16 bit, stereo, 4 bytes/frame, little-endian not supported.
at java.desktop/com.sun.media.sound.DirectAudioDevice$DirectDL.implOpen(Unknown Source)
at java.desktop/com.sun.media.sound.DirectAudioDevice$DirectClip.implOpen(Unknown Source)
at java.desktop/com.sun.media.sound.AbstractDataLine.open(Unknown Source)
at java.desktop/com.sun.media.sound.DirectAudioDevice$DirectClip.open(Unknown Source)
at java.desktop/com.sun.media.sound.DirectAudioDevice$DirectClip.open(Unknown Source)
at app.lexilabs.basic.sound.SoundBoard$startMixer$1.invokeSuspend(SoundBoard.kt:53)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:100)
at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:586)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:829)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:717)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:704)
Suppressed: kotlinx.coroutines.internal.DiagnosticCoroutineContextException: [StandaloneCoroutine{Cancelling}@2978a3ca, Dispatchers.Default]`

I found this librespot-org/librespot-java#41
where they say

This exception usually means that the device is already in use.

Working since selecting another mixer (e. g. ALSA)

Crashes when preloading next track, probably because the mixer can't handle multiple lines at once.

The line causing the exception is

clip.open(format, byteArray, 0, byteArray.size)

Line 53, startMixer() in SoundBoard.kt

[robertjamison]

New snapshot being pushed tomorrow. Unfortunately, it does not print the commit hash when initiated. My build environment prohibits me from doing so.