diff --git a/ap/lib/libtinyalsa/tinyplay.c b/ap/lib/libtinyalsa/tinyplay.c
new file mode 100644
index 0000000..88c54ae
--- /dev/null
+++ b/ap/lib/libtinyalsa/tinyplay.c
@@ -0,0 +1,272 @@
+/* tinyplay.c
+**
+** Copyright 2011, The Android Open Source Project
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are met:
+**     * Redistributions of source code must retain the above copyright
+**       notice, this list of conditions and the following disclaimer.
+**     * Redistributions in binary form must reproduce the above copyright
+**       notice, this list of conditions and the following disclaimer in the
+**       documentation and/or other materials provided with the distribution.
+**     * Neither the name of The Android Open Source Project nor the names of
+**       its contributors may be used to endorse or promote products derived
+**       from this software without specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY The Android Open Source Project ``AS IS'' AND
+** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+** ARE DISCLAIMED. IN NO EVENT SHALL The Android Open Source Project BE LIABLE
+** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+** DAMAGE.
+*/
+
+#include <tinyalsa/asoundlib.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <signal.h>
+
+#define ID_RIFF 0x46464952
+#define ID_WAVE 0x45564157
+#define ID_FMT  0x20746d66
+#define ID_DATA 0x61746164
+
+struct riff_wave_header {
+    uint32_t riff_id;
+    uint32_t riff_sz;
+    uint32_t wave_id;
+};
+
+struct chunk_header {
+    uint32_t id;
+    uint32_t sz;
+};
+
+struct chunk_fmt {
+    uint16_t audio_format;
+    uint16_t num_channels;
+    uint32_t sample_rate;
+    uint32_t byte_rate;
+    uint16_t block_align;
+    uint16_t bits_per_sample;
+};
+
+static int close = 0;
+
+void play_sample(FILE *file, unsigned int card, unsigned int device, unsigned int channels,
+                 unsigned int rate, unsigned int bits, unsigned int period_size,
+                 unsigned int period_count);
+
+void stream_close(int sig)
+{
+    /* allow the stream to be closed gracefully */
+    signal(sig, SIG_IGN);
+    close = 1;
+}
+
+int main(int argc, char **argv)
+{
+    FILE *file;
+    struct riff_wave_header riff_wave_header;
+    struct chunk_header chunk_header;
+    struct chunk_fmt chunk_fmt;
+    unsigned int device = 0;
+    unsigned int card = 0;
+    unsigned int period_size = 1024;
+    unsigned int period_count = 4;
+    char *filename;
+    int more_chunks = 1;
+
+    if (argc < 2) {
+        fprintf(stderr, "Usage: %s file.wav [-D card] [-d device] [-p period_size]"
+                " [-n n_periods] \n", argv[0]);
+        return 1;
+    }
+
+    filename = argv[1];
+    file = fopen(filename, "rb");
+    if (!file) {
+        fprintf(stderr, "Unable to open file '%s'\n", filename);
+        return 1;
+    }
+
+    fread(&riff_wave_header, sizeof(riff_wave_header), 1, file);
+    if ((riff_wave_header.riff_id != ID_RIFF) ||
+        (riff_wave_header.wave_id != ID_WAVE)) {
+        fprintf(stderr, "Error: '%s' is not a riff/wave file\n", filename);
+        fclose(file);
+        return 1;
+    }
+
+    do {
+        fread(&chunk_header, sizeof(chunk_header), 1, file);
+
+        switch (chunk_header.id) {
+        case ID_FMT:
+            fread(&chunk_fmt, sizeof(chunk_fmt), 1, file);
+            /* If the format header is larger, skip the rest */
+            if (chunk_header.sz > sizeof(chunk_fmt))
+                fseek(file, chunk_header.sz - sizeof(chunk_fmt), SEEK_CUR);
+            break;
+        case ID_DATA:
+            /* Stop looking for chunks */
+            more_chunks = 0;
+            break;
+        default:
+            /* Unknown chunk, skip bytes */
+            fseek(file, chunk_header.sz, SEEK_CUR);
+        }
+    } while (more_chunks);
+
+    /* parse command line arguments */
+    argv += 2;
+    while (*argv) {
+        if (strcmp(*argv, "-d") == 0) {
+            argv++;
+            if (*argv)
+                device = atoi(*argv);
+        }
+        if (strcmp(*argv, "-p") == 0) {
+            argv++;
+            if (*argv)
+                period_size = atoi(*argv);
+        }
+        if (strcmp(*argv, "-n") == 0) {
+            argv++;
+            if (*argv)
+                period_count = atoi(*argv);
+        }
+        if (strcmp(*argv, "-D") == 0) {
+            argv++;
+            if (*argv)
+                card = atoi(*argv);
+        }
+        if (*argv)
+            argv++;
+    }
+
+    play_sample(file, card, device, chunk_fmt.num_channels, chunk_fmt.sample_rate,
+                chunk_fmt.bits_per_sample, period_size, period_count);
+
+    fclose(file);
+
+    return 0;
+}
+
+int check_param(struct pcm_params *params, unsigned int param, unsigned int value,
+                 char *param_name, char *param_unit)
+{
+    unsigned int min;
+    unsigned int max;
+    int is_within_bounds = 1;
+
+    min = pcm_params_get_min(params, param);
+    if (value < min) {
+        fprintf(stderr, "%s is %u%s, device only supports >= %u%s\n", param_name, value,
+                param_unit, min, param_unit);
+        is_within_bounds = 0;
+    }
+
+    max = pcm_params_get_max(params, param);
+    if (value > max) {
+        fprintf(stderr, "%s is %u%s, device only supports <= %u%s\n", param_name, value,
+                param_unit, max, param_unit);
+        is_within_bounds = 0;
+    }
+
+    return is_within_bounds;
+}
+
+int sample_is_playable(unsigned int card, unsigned int device, unsigned int channels,
+                        unsigned int rate, unsigned int bits, unsigned int period_size,
+                        unsigned int period_count)
+{
+    struct pcm_params *params;
+    int can_play;
+
+    params = pcm_params_get(card, device, PCM_OUT);
+    if (params == NULL) {
+        fprintf(stderr, "Unable to open PCM device %u.\n", device);
+        return 0;
+    }
+
+    can_play = check_param(params, PCM_PARAM_RATE, rate, "Sample rate", "Hz");
+    can_play &= check_param(params, PCM_PARAM_CHANNELS, channels, "Sample", " channels");
+    can_play &= check_param(params, PCM_PARAM_SAMPLE_BITS, bits, "Bitrate", " bits");
+    can_play &= check_param(params, PCM_PARAM_PERIOD_SIZE, period_size, "Period size", "Hz");
+    can_play &= check_param(params, PCM_PARAM_PERIODS, period_count, "Period count", "Hz");
+
+    pcm_params_free(params);
+
+    return can_play;
+}
+
+void play_sample(FILE *file, unsigned int card, unsigned int device, unsigned int channels,
+                 unsigned int rate, unsigned int bits, unsigned int period_size,
+                 unsigned int period_count)
+{
+    struct pcm_config config;
+    struct pcm *pcm;
+    char *buffer;
+    int size;
+    int num_read;
+
+    memset(&config, 0, sizeof(config));
+    config.channels = channels;
+    config.rate = rate;
+    config.period_size = period_size;
+    config.period_count = period_count;
+    if (bits == 32)
+        config.format = PCM_FORMAT_S32_LE;
+    else if (bits == 16)
+        config.format = PCM_FORMAT_S16_LE;
+    config.start_threshold = 0;
+    config.stop_threshold = 0;
+    config.silence_threshold = 0;
+
+    if (!sample_is_playable(card, device, channels, rate, bits, period_size, period_count)) {
+        return;
+    }
+
+    pcm = pcm_open(card, device, PCM_OUT, &config);
+    if (!pcm || !pcm_is_ready(pcm)) {
+        fprintf(stderr, "Unable to open PCM device %u (%s)\n",
+                device, pcm_get_error(pcm));
+        return;
+    }
+
+    size = pcm_frames_to_bytes(pcm, pcm_get_buffer_size(pcm));
+    buffer = malloc(size);
+    if (!buffer) {
+        fprintf(stderr, "Unable to allocate %d bytes\n", size);
+        free(buffer);
+        pcm_close(pcm);
+        return;
+    }
+
+    printf("Playing sample: %u ch, %u hz, %u bit\n", channels, rate, bits);
+
+    /* catch ctrl-c to shutdown cleanly */
+    signal(SIGINT, stream_close);
+
+    do {
+        num_read = fread(buffer, 1, size, file);
+        if (num_read > 0) {
+            if (pcm_write(pcm, buffer, num_read)) {
+                fprintf(stderr, "Error playing sample\n");
+                break;
+            }
+        }
+    } while (!close && num_read > 0);
+
+    free(buffer);
+    pcm_close(pcm);
+}
+