Acer MP330 disk mounting problem

Just go to settings in the music player. In the MTP option, change it to USB... Problem solved

You should be able to buy an external USB drive (or thumb drive) at any electronics store.
You can connect a USB hard disk drive or USB
memory stick to your TV by using the USB inputs of
the TV. This feature allows you to play files stored in
a USB drive. 2.5" and 3.5" inch (hdd with external
power supply) external hard disk drives are supported.
IMPORTANT! You should back up your files before
making any connections to the TV set in order to
avoid any possible data loss. Manufacturer will not
be responsible for any file damage or data loss. It is
possible that certain types of USB devices (e.g. MP3
Players) or USB hard disk drives/memory sticks may
not be compatible with this TV.
Quickly plugging and unplugging USB devices, is a
very hazardous operation. Do not repeatedly quickly
plug and unplug the drive. This may cause physical
damage to the USB player and USB device itself. Do
not pull out USB module while playing a file.
Media Browser Menu
You can play photo, music, and movie files stored
on a USB disk by connecting it to your TV and using
the Media Browser screen. To do this, perform the
following: Connect a USB disk to one of the USB
inputs located on the side of the TV.
You can connect two USB devices to your TV. If both
USB devices include music, picture or video files, USB
selection OSD will be displayed on the screen. The
first USB device connected to the TV will be named
as USB Drive1. Select a device by using up or down arrows
and press OK

1) Turn on your mp3
2) go 2 settings>MTP thn select MTP
3) connect 2 a pc
then you'll see it as a portable device
4) FORMAT IT
5) go 2 settings>MTP thn select USB [on ur mp330]

When your MP3 Player is connected to a computer, you may transfer music files to your MP3 player using your operating system's basic file management commands (i.e., copy-and-paste or drag-and-drop).Connect the Coby MP3 player to your computer through its USB adapter. Select "Open folder to view files" from the new device dialog box that pops up. If the new device dialog does not appear upon the hardware's connection, click "Start," click "My Computer" and right-click the Coby MP3 player's device icon in Windows Explorer .Click "Start," click "My Music" and open the folder containing the music you wish to transfer onto the Coby MP3 player. Drag and drop the music files or folders into the Coby MP3 player's open directory. Alternatively, you can highlight the music files or folders and click the "Copy the selected" link from the Files and Folders Tasks menu in the left column. Select the "Removable Disk" drive from the list of destinations.

of course you have to secure a installer disk even if you lose it.... And also you can download a Software Installation from your MP3 Website..
Theres a lot of MP3 are not using a program on its own to upload and download a mp3 files in your MP3 player.
But if you can download your mp3 files without using a program of your mp3 player and then you can play it... Its ok...! Good luck!

start player with it connected to the pc
then left click and drag and drop the selected music to your music file on your pc

If this problem occurs then your ML648B needs to be formatted.

1. Connect your ML648B to your computer with Windows XP or later.
2. By default your computer will recognize ML648B as GPX MTP Device. Press the POWER button from top of your ML648B, to change it to USB mode connection. You will also see USB on the screen of ML648B.
3. ML648B will now mount 2 drives, one as Tools (as CD-Drive) and second as Removable Disk (Drive) – under My Computer on your Windows Desktop.
4. Right click your mouse and then select the Format option. When the Format Removable Disk window appears select the Start button to start formatting your MP3 player.

Windows Media Player says that my ML638B is full but it’s actually empty. How do I fix this problem?

If this problem occurs then your ML638B needs to be formatted.

1. Connect your ML638B to your computer with Windows XP or later.
2. By default your computer will recognize ML638B as GPX MTP Device. Press the POWER button from top of your ML638B, to change it to USB mode connection. You will also see USB on the screen of ML638B.
3. ML638B will now mount 2 drives, one as Tools (as CD-Drive) and second as Removable Disk (Drive) – under My Computer on your Windows Desktop.
4. Right click your mouse and then select the Format option. When the Format Removable Disk window appears select the Start button to start formatting your MP3 player.

i cant record and the guide dont say how to record
pls help me!!!!!!!!!!!!!!!!!!!!!!

Plug in your player in USB port.After the system reckognizes it right click on My Computer.Select Manage.Computer Management should open.Go to Disk Management.There you`l have disk 0(your hard dribe) and another disk drive which should be YP-1.Right click on YP`s disk folume and select format.Wait a bit,then a dialogue will pop-up.Select format,start the operation and wait until it finishes.After the format is complete your player should work fone.It helped me some months ago and i hope it`ll help you too cuz the situation is exactly the same