It is not a mac. It is a HP Pavilion dv6-3225dx laptop. I just bought this computer last week and have looked at the specs for a sound card, but if it's there, it does not identify a sound card.

I copied and pasted the specs. I hope this isn't too overwhelming:

Microprocessor 2.26GHz Intel Core i3-350M Processor
Microprocessor Cache 3MB L3 Cache
Memory 4GB DDR3 System Memory (2 DIMM)
Memory Max 8GB
Video Graphics Intel HD Graphics
Video Memory Up to 1696MB
Hard Drive 500GB (5400RPM)
Multimedia Drive LightScribe SuperMulti 8X DVD±R/RW with Double Layer Support
Display 15.6" diagonal High-Definition HP BrightView LED Display (1366 x 768)
Fax/Modem
Network Card Integrated 10/100/1000 Gigabit Ethernet LAN
Wireless Connectivity 802.11 a/b/g/n Dual-Band WLAN + WiMAX combo cards with WiDi (36)

Sound Dolby Advanced Audio with Altec Lansing speakers

Keyboard 101-key compatible with island-style full-size keyboard
Pointing Device HP Clickpad with On/Off button
PC Card Slots
External Ports 5-in-1 integrated Digital Media Reader for Secure Digital cards, MultiMedia cards, Memory Stick, Memory Stick Pro, or xD Picture cards
4 Universal Serial Bus (USB) 2.0, 4th port shared with eSATA
1 HDMI
1 VGA (15-pin)
1 RJ -45 (LAN)
1 Headphone-out
1 Microphone-in

Other Devices HP TrueVision Webcam with integrated digital microphone
HP SimplePass Identity Protection with integrated fingerprint reader

Dimensions 14.88" (L) x 9.65" (D) x 1.21" (min H) -1.37" (max H)
Weight 5.53 lbs
Security Kensington MicroSaver lock slot
Power-on password
Accepts 3rd party security lock devices

Power 65W AC Adapter
6-Cell 55WHr Lithium-Ion Battery

What's In The Box HP TrueVision Webcam with integrated digital microphone

HP SimplePass Identity Protection with integrated fingerprint reader