Update Readme, license and Makefile

LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2024 by PedroEdiaz <ppedroediaz (at) gmail.com>. 
+Copyright (c) 2025 by PedroEdiaz <ppedroediaz (at) gmail.com>. 
 
 Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted.
 

Makefile

@@ -0,0 +1,11 @@
+BIN= cdplayer
+OBJ= \
+	cdplayer.o \
+	tinyalsa/src/pcm.o \
+	tinyalsa/src/pcm_hw.o \
+	tinyalsa/src/snd_card_plugin.o
+
+CFLAGS = -Itinyalsa/include
+
+$(BIN): $(OBJ)
+	$(CC) $(OBJ) -o $(BIN)

README

@@ -1,18 +1,46 @@
-	cdplayer
+# cdplayer — Minimal CDDA Player for Linux
 
-"cdplayer" is a minimal CDDA (Compact Disk Digital Audio) player
-for linux, that only depend on tinyalsa.  
+**`cdplayer`** is a minimal CDDA (Compact Disc Digital Audio) player for Linux.
+It plays audio CDs directly from `/dev/sr0` (or other CD devices) with almost
+no dependencies — relying only on [**tinyalsa**](https://github.com/tinyalsa/tinyalsa).
 
-BUILD:
-	cc -ltinyalsa -o cdplayer cdplayer.c
 
-USAGE:
-	./cdplayer /dev/sr0 (<card>) (<device>) // play cd
+## Features
 
-	kill -USR1 <proc> // Seek a minute forward
-	kill -USR2 <proc> // Seek a minute backward
-	kill -STOP <proc> // Stop
-	kill -CONT <proc> // Play
+- Plays standard audio CDs via CD-ROM device
+- Controlled using UNIX signals (no GUI or TUI)
+- Depends only on `tinyalsa` for audio playback
+- Extremely small and hackable C codebase
 
-LICENSE: 
-	0BSD Copyright (c) 2024 by PedroEdiaz <ppedroediaz (at) gmail.com>
+## Build
+To compile the program run `make` or:
+```sh
+cc -Itinyalsa/include -o cdplayer cdplayer.c tinyalsa/src/pcm.c tinyalsa/src/pcm_hw.c tinyalsa/src/snd_card_plugin.c
+```
+
+## Usage
+```sh
+./cdplayer cdrom [card=0] [device=0]
+```
+
+- `cdrom` — CD-ROM device like `/dev/sr0`
+- `card` — ALSA sound card number (default: 0)
+- `device` — ALSA PCM device number (default: 0)
+
+## Controls (via `kill`)
+You can control playback using UNIX signals:
+
+Signal|Action
+------|-----
+`SIGUSR1`|Seek forward 1 minute
+`SIGUSR2`|Seek backward 1 minute
+`SIGSTOP`| Pause playback
+`SIGCONT`| Resume playback
+
+
+## Licence
+0BSD – Zero Clause BSD License. See [LICENSE](./LICENSE) for details.
+Feel free to use, modify, and share freely — no restrictions.
+
+## Contributing
+Contributions are welcome! Feel free to submit issues or pull requests.

cdplayer.c

@@ -44,7 +44,7 @@ int main( int argc, char * argv[] )
 	{
 		weite_err( "Usage: " );
 		weite_err( argv[0] );
-		weite_err( " /dev/sr0 (<card>) (<device>)\n" );
+		weite_err( "cdrom [card=0] [device=0]\n" );
 		goto err0;
 	}